Sharpshooter still hits the specimens harder than any other perk. Xbow does over at least 2000 damage per shot, and even with the fleshpounds headshot resistance it is far higher than any other class. So no he isn't useless he jsut can't loner pwn everything now
Commando's Scar does need a little buff to be fair, but it won't need much at all. The role of the Commando is to efficiently clear out the trash Zeds and eliminate hard to see sneaky threats like stalkers and crawlers, which may interupt other classes taking on the big stuff. He should gneerally be targetting the stuff following in behind the big guys as opposed to the big guys themselves. So tbh he is back into his role as it was intended
Theres alot of research into making the Berserker balanced, I think he will come out the other end very very well. Powerful and fun, but not a automatic game winner like he was before the Level Up update (And the Sharpshooter is now).
Pipe Bombs are tricky, but the key point is its expensive for demomen too, money is quite scarce in the new game and pipe stacking is hard even for demomen.
The beta as it is right now IMO is FAR more fun than the normal game atm, so a couple more tweaks and I reckon it'll be perfect. Keep the faith man