So, Evocation Adept lets every cleric, druid, and some warlocks grab Fireball and then later Wall of Force, and then also they all get to spend hit dice to add 2d8 to that fireball's damage at level 5 and cast them better than a wizard. This is obviously stupid because the cleric and druid should not be allowed to cast Fireball, and arguably nobody should be allowed to cast Wall of Force. The other feats aren't as evil, but wizards still just probably shouldn't have Conjure Animals (especially if they and their party can abuse it), and Clerics probably shouldn't have Polymorph, and so on and so forth. A lot of people are already aware of all this, so I won't go into detail.
But then there are other Adept feats which, despite not giving you spells that are as iconic and terrifying, are still good and fun feats that don't really ruin anything or really step on anyone's toes as far as I can tell.
For example, Enchantment Adept gives you a subtle spell effect on all enchantment spells, which is a pretty good buff to the out of combat focused ones since people who pass their save or bystanders won't necessarily notice you casting it, and it prevents your in-combat ones from being counterspelled. That's a nice benefit! I'd want that on a character that used spells like Charm Person. I don't even think it encoaches too far on the Sorcerer's territory or that of people who took Metamagic Adept, since they can use subtle spell on *any* spell, just at the cost of a resource.
And then the list of spells that came with the feat made me think because overall, if I took this feat on a character who wanted to do some enchanting, I would be pretty happy with my choice since three of those spells are decent to good. But also, I got Enthrall and Dominate Beast for free on top of that, so if situations come up where they might be useful, I might as well be the first person in history to unironically cast Enthrall.
So it's a really cool feat since it 1) rewards the kind of character who would want to specialize in enchantment spells without being overpowered or a must-have for entire classes, 2) doesn't provide so much enchanting that an enchantment-based character is obsolete if someone else takes this one feat, 3) isn't the only option to get stuff like subtle enchantment spells because subtle spell metamagic exists and is more limited in use but versatile, and 4) it gives you some crappy spells for free that you wouldn't normally take or use, but you can use them when the right situation comes up.
Same with Illusion Adept. You get 2-5 new illusion spells, subtle illusion spells, and barring any really evil Hallucinatory Terrain hijinks (i forget what they are exactly but im sure they exist), you aren't getting the best illusion spells or anything that really fills an enormous hole in any particular class, you just get some decent illusions + a buff to all illusions + some situational illusion spells like Seeming that you would never take normally but might use in the right situation.
Abjuration Adept would be like this too if they gave out something less powerful than Shield for the first level pick (Metamagic Adept (Wizard) for Shield is great, we dont have to hand out 4 more spells and a temp hp thing on top of that), and then Necromancy Adept kinda sucks and is boring but at least it has none of the problems of Evocation Adept. Divination Adept is also fine. You get some divination spells and a neat rechargable ability, but someone with Augury built into their class is divining better than you, same with a divination wizard with their portents.
And then I thought, maybe Evocation Adept would be just like these other interesting feats and not really be much of a problem if the two fucked up standout spells were replaced with other stuff. Lightning Bolt is a decent spell, but usually ignored in favor of fireball; why not put it on this feat? I wouldnt say the cleric is suddenly as good of a blaster as a wizard if they had the line-shaped one instead of the 40 foot diameter death orb.
And then for Wall of Force, there are literally 3 other 5th level evocation spells in the PHB and I don't care if it's Cone of Cold, Bigby's Hand, or Destructive Wave, just get Wall of Force the hell out of there. I'll just go with Cone of Cold since druids have it already, it's a bit mediocre for its level, it's an instantaneous blast that fits with the whole evocation blasting theme unlike bigby's hand, and it's not stealing from the paladin.
I can also see arguments for swapping Shatter and/or Vitriolic Sphere for something else since those are also the highest damage instantaneous blasts of their level (ignoring pre-2024 stuff like Rime's Binding Ice which has the same damage but is better due to a bonus effect), and letting a level 4 cleric do a 5d8 shatter by spending hit dice does feel wrong despite the immense cost; Spiritual Weapon and Fire Shield would be good replacements imo, since one is taken from the cleric list and one is from the druid/wizard list.
So, maybe the final list would look like Chromatic Orb, Spiritual Weapon, Lightning Bolt, Fire Shield, and Cone of Cold. I feel like that would protect the whole "instantaneous blaster wizard/sorcerer" niche from just being slurped up by the cleric and druid, while still giving them a taste of it, and also, Spiritual Weapon being there gives wizards a nice flaming sphere sidegrade if they take this feat for the hit die to damage thing.
Then for Transmutation Adept and Abjuration Adept? Imo, just swap Polymorph for Control Water and Shield for Shield of Faith. They're still good feats despite the downgrade. Now you no longer have to worry about clerics grabbing basically Magic Initiate (Wizard) but with 4 more spells and bonus temp hp, or getting arguably the best 4th level wizard spell + up to 4 other spells some of which are great too + occasional speed boosts.
For Conjuration Adept, Entangle and Conjure Animals are tied for the best druid spells of their level, but if they were swapped for Grease and Call Lightning, I think that would be fine. but this feat is giving out +4 or +5 to your conjuration spell concentration saves too, I think the 3rd level spell is allowed to be a little mediocre. Teleportation is also more common now, so I'm not that worried about other classes getting misty step/dimension door.
Necromancy Adept is lame and boring and there are very few necromancy spells and fewer worth casting, but I think swapping Inflict Wounds for False Life and Vampiric Touch for Summon Undead would make it good enough. Actual necromancers get Animate Dead anyway, and lots of spellcasters get summon spells that are roughly equivalent to Summon Undead already, so it should be fine.
Overall, I think this kind of evens out all the Adept feats power-wise, makes none of them a must-have (even a cleric tempted by Lightning Bolt might remember how good Spirit Guardians is and change their mind and grab some other feat instead), and still keeps all of them as fun spells (except Necromancy Adept which is still boring but at least they can summon things).
So what do you all think? Is the whole idea of the Adept feats flawed and do they deserve to be sent straight to hell, or is just tweaking some of the spells enough to balance them and protect class niches while keeping them as fun feats? Are there alternate spell lists you think would be even better fixes? Do you think I should have given them even more aggressively mediocre spells when suggesting changes? And if you're planning on using this as actual homebrew for your table instead of as an interesting thought experiment, let me know.