The McCree nerf sounds fair, but Widow is basically "stable" for the pro players.
Base damage decreased from 15 to 12
Note: Scoped shot damage multiplier remains unchanged
Headshot damage multiplier increased from 2x to 2.5x
If you can land a lot of headshots, your damage is basically unchanged. It rewards player accuracy but I've encountered plenty of Widow that were delivering headshots consistently so...
Players must now wait for the unscoping animation to completely finish before scoping
Infra-Sight
Ultimate cost increased by 10%
This is where its getting a bit better. I didnt play the game so maybe the unscoping animation is long enough to be called a "nerf"?
And the 10% ultimate feels a bit like piss in the wind, but its better than nothing.
Maybe it will be enough, time will tell.