Hey there,
Thanks for replying to my post 
I understand what you’re trying to say, but I’ll be honest. In most games getting damage boosted these days let alone finding a healer who is not a part of a pre made stack is kind of rare. Now this is just for me or for everyone I really cant say. But if the developers are only taking in the higher bracket of players who actually assist their team mates by doing damage boosts, playing Orisa properly or nano boosting the McCree instead of the genji who spams his nano blade then yes I completely agree that McCree will be one shotting squishes which might be a bit too much.
But in most game situations for me i.e solo queuing all day either in comp or in qp team play is very rare and I give you my word 9 out of 10 matches are all dps comps. I think it’s time the match making could be looked at because I really don’t see a way out of this unless I have friends playing with me or I’m just hitting headshots almost every time which you also know is very difficult.
I guess a fix could be to keep the damage numbers unchanged and instead give McCree a passive like an armor plate like Torb is getting. 250 hp like reaper but 50 of it is armor to increase his suitability, decrease the roll to 4 seconds to make him a bit more mobile and possibly make the flashbang set at a 1 full second of stun or reduce the cooldown to 8 seconds.
I’ll be honest, with the recent FTH change… I can actually fight a Brig and sometimes win which is just fantastic for me as I mostly always get cornered and even if I take down that brig player I’m doing my team a big help even if the next enemy gets me.
Now with all of this said I agree with most of what you said but I still think McCree needs a second look.
Yeeeeehaaaaaw!