If your entire team dies your momentum crashes even if you rez them up right after and I never implied that all single target rezzes are tempo rezzes.
Mercy being underpowered doesn’t mean mass rez didn’t need reworking and her kit was always kinda missing something. I’d lean toward a substantially reworked valkyrie+instant single target rez.
People have to carefully select their rez targets on live at the moment anyway.
Barring the implementation of some resource system that’s kinda what I said?
Current rez proves otherwise. The goal was always to prevent a numbers advantage; gaining it requires waiting for someone to die on the enemy team, and more people to die on your team.