Thanks for making one of my favourite classes useless.
He's not useless, you just have to have skill to use him now 
its true. he actually has MORE potential now, because he can jump higher. its all a matter of strategy.
Woah.
Untrue.
To be honest, now it's easy to be overtaken by scouts and firebugs. Seeing as how they're more flexible then you and pyro can even air reflect more now
If you hold back a shot for even a split second, he can reflect it back. Either hold M1 and waste your ammo, or have all of it reflected back. That and scouts dodging your shots, forcing you to

as you await death by scattergun.