I played for Pyro for a few hours. He’s quite useful inside a building, close quarters combat (but not so that you don’t have room to maneuver). Unfortunately on most maps there’s a lot of open space, in some places you don’t even have an option to go to close quarters. In that case he’s quite useless since it’s hard to close the gap and people just run backwards shooting you. Also it seems impossible to kill the Heavy with Pyro, every time I tried I ended up dying badly, even after getting a few seconds head start on the burning.
As for sniper, he seems like the second worst class right now. Maybe I just need super fast fingers, but everyone is running around way too fast for me to effectively snipe at medium-short ranges like with the scout in CS:S. Also, I don’t really like how you can’t walk when you aren’t scoped.
I liked most of the other classes though.