I haven’t played with the PTR Mercy at all (and would rather wait for it to be ironed out than jump in to test and not provide feedback), but I have to say that I don’t really like that she’s being redone. I’ve never felt that Mercy was a ‘skill-less’ character and I found that, after sitting down and playing nothing but Mercy for a few weeks, her toolset isn’t as easy to pick up with as it initially seems. Unless you’re working with a solid team, the five-person Resurrection is a very rare event, and ‘going and hiding’ was easily punished (either by ill preparation or a canny enemy).
I say this because I feel like the inspiration for these changes are from people on r/Overwatch whining about ‘top 500 Mercy’ and players who prefer playing as her. My temptation is, admittedly, to just dig my heels in and want to keep her as she is, but I hope that Hawkins’ optimism is right and it will only benefit the character.
That said, I’m still not reconciled to the Bastion tweaks, so maybe I’m just impossible to please.