The problem with pyro HAS never been damage IN ANY WAY anyone can run vanilla pyro and get a decent amount of kills (playing people at the same level as their main)
the problem with pyro is speed
and thank god for it
I think enigma(?) pinned down the hate list very well
engi -> heavy -> pyro
don't try and change it please, the game is already very fun and doesn't really need to be changed in my opinion