Idk if this has been said, as I am way too far behind on this thread to read everything, but I think a fair nerf would be to double the time it takes Ifrit to revive heroes (from 15 sec —> 30 sec).
It seems like they come straight back to life as soon as they get killed with how it is now. Doubling his platinum skill’s time, I feel, would not make him useless, and still keep him a threat.
EDIT: Maybe even 25 seconds.