For the guys whining... have you even played it yet?
Medics are fun, I have no idea how they once were, but that was like 9 years ago. They are fun to use just because you are right in the line of fire and making sure your soldier/pyro/heavy is able to break through the defence with your ubercharge and otehr stuff.
And you can still kill people with medics, his bonesaw is rediculous, like 2 hits will kill someone if you sneak up behind them. Also shooting syringes can kill too. But medics are there for what they need to do, heal.