Personally I'm extremely excited. After Kindred got an update that made her way more fun, and Shen got a very flavorful kit, I've never really been quite as hyped as I am now (aside from when Constellations and SB dropped).
Personally, I really hope to see some under utilized champions, get mini-reworks for PVE to make them better.
Some of my hopes are Fiora, Katarina, Quinn, Irelia and Kalista.
For Fiora I love her wincon, but understand it can be too strong and reliable at times.
Same with Katarina. Anything that refunds her cost can immediately break her.
Quinn, Irelia and Kalista I think are really cool.
I'd love to see the soul bond for Kalista summon the unit, remove ephemeral and give it a random item. Kalista's champ unit could also probably use a bit of help for PVE but she's overall really got a lot of potential I think.
Quinn is cool. Scouts are cool, but she kinda does similar things to Ambessa. So instead of normal stuff I hope they lean her into being a BIRD deck and use like TALONED STRIKE and Swiftwing Flight and stuff for a bird deck, and then just have valor get like a bunch of items the more you attack.
Irelia I think is obvious. Blades everywhere. Storm of Blades with the add copies, they cost 1 item, and just go crazy with it and toss in Zinneia with a item that like, -1 cost for each time allies have attacked this game or something. Honestly would be AWESOME.
As for PVE exclusives, I'd LOVE to see
-Akali, straight up, she's just cool.
-Briar, I want the gremlin to eat the enemies.
-Graves, it's Graves, he has a shot gun. Yes please. New keyword please.
-Hwei. I want all that combo potential, cranked up with spells that you sequence to get new effects. It would be awesome.
-Renata. I love SB Eve and want to steal more units please.
What are you guys hoping for?