[quote1203351169=RESPAWN]
The last thing you want on a team based game is for one team to have an overwhelming advantage. The thing I like most about TF2 is how easy it is for a new player to just jump on and start playing. Nothing sucks worse than jumping into a game and getting owned immediately.
[/quote1203351169]
Well, even if one team did have all unlockable weapons, and didn't use normal ones, it would still be a pretty balanced fight. All the weapons will be balanced, lets take the overhealer for example. Yes it permantly boosts health to 200% of normal hp. But, it'll either charge uber really slow, or not uber at all. So valve has left players with a problem. Let people uber, but only with temporary 150% hp, or permantly have 200% hp, with very little ubers. The same thing for everyone elses unlocked weapons.