Flanking most Supports feels so hard since they all can move around the entire map in a second and have less than 10 second cooldown on said mobility ability.
Also he still has the loudest footsteps in the Game for no reason and a suicide Ult that doesn't have a cancel after 10 years of Power Creep. Every single Hero can move out of it, stun him, 2 tap him or just outheal it. You are just stunning yourself for 3 secs while also reducing ur movespeed by 50%
Reaper is basically just there to hold Angles or space. If he is brawling he can get bursted by random spam. So its just better to hold angles and scare people.
It kind of is a boring playstyle but I just can't make Flanking work on him because of shitty Maps or Op new Heroes