I agree with most of what he says, but there’s also the mechanical monopoly that she has that keeps her a top pick.
Mercy is the only viable rez hero in the game. The only other rez hero we have is hot garbage (Symmetra) and is due to lose her competing mechanic (teleporter) as competition.
This is going to stay the way that it is until mercy gets competition for Rez.
That said, I want a new rez hero just to give Mercy some competition in that space (which I’m actually thinking we’re going to get with the next support hero released since the Devs have stated that the next three heroes are going to be pure role-targeted heroes and not hybrids).
On top of that, I’d also like to see a hero or two released that’s as decision-making based as Mercy to give mercy players heroes to transfer skills to. Mercy is notoriously bad for skill transfer. Her playstyle is so unique, if you main her it’s like you’re playing a different game from the rest of us. If you try to take what you learn playing Mercy and use it with any other heroes, almost nothing transfers and you’re basically starting from square one.
I’d like to see more decision-based heroes to let mercy-fans/mains/onetricks transfer their skills more easily. Specifically I’d like to see a decision-based DPS, and a decision-based Tank. That way Mercy players can flex a lot more than they do without having to put in double the work of the aimbros.