According to this post (Every balance change by hero logged)
mccree has received 7 patch changes, all of them being HARD BUFFS. I think the fth revert is more of bug fixing an extremely broken part of his kit that was a disastrous mistake.
Reaper’s life steal got toned down??? I have no idea what game you’re talking about, unfortunately the changes you make in your custom games are not the same as in the patch notes. His life steal has ONLY received insane buffs that were a big mistake.
Mei’s wall got nerfed? where in the patch notes for mei did you read that? Unfortunately what you write down on the chalk board in your bedroom don’t make it to the patch notes. Even IF IT DID get nerfed, the nerf was more insignificant than a soldier in 2019 against orisa rein sigma and sym ult.