Her playstyle has certainly changed.
The problem isn’t rez itself.
the problem is rez on e and the problem with old invuln mass rez was that it had little counterplay, and rez before that was a kamikaze burst of impact,
we need a middle ground between that while also adding a higher skill ceiling to mercy.
we NEED our only pure healer in the game to have a high skill ceiling or else things like 2.0 happen.
she should’ve stayed a single target healer always, and she should’ve kept mass rez.
could’ve avoided a year of grief and bad game design is so.
see titanium’s thread for a more indepth explanation on a rework that could fix said issues and more.