I think she is more fun to play when shes not an auto lock res-bot. I like feeling that I might be able to even compete with her other healers. She still has the best solo target throughput in the game, and one of the highest mobility characters.
Before the changes I honestly felt like I was letting my team down if I played anyone but her as the main healer, because most people don’t go around auto locking mercy every match. Or even a main role.
You aren’t supposed to be able to completely stop all death every time as a healer, just as you aren’t allowed to take away the frustration of death, but it should be something you use sparingly, and with a little planning. not just dive in res whoever and fly around at half the speed of light.