Hype! With i58 (LAN featuring international teams) coming up soon, it's looking like a good time for comp-TF2.
I don't have the time to dedicate myself seriously to the game these days, but I still love following Invite and Prem. There's no other game with the same mix of teamplay and DM/movement, but I am looking forward to the lack of bans and new weapon balances shaking up the meta a bit.
Will definitely fire up the game and play both ranked and unranked.
In 9v9 (aka Highlander), there's one of each class.
In 6s, all can be run but there's the simple fact that some classes are specialists and some are generalists. When the main gamemode (5cp) relies on quickly pushing or rotating, of course the fastest classes will see the most use. Plenty of teams consistently offclass to Sniper and occasionally Spy for picks, and Pyro/Heavy/Engy are pulled out often on last holds.