This has been mentioned a couple of times, but only one thread has been done (and it was CRAP, "give the medic an adrenaline shot")
I think that you should add at least a weapon to the medic, give him the thompson/mp40 like in FH1 and BF1942 (and every other war game) because at the moment it's shit! A pistols aren't enough... who would like to run around with a kit that only has a pistol and some bandages, rambo maybe...? Another thing is the revive ability. Add some sort of thing that you could revive people with (then throw the bandages to heal him), I know it's not that realistic but heck, even Project Reality got it and all they go for is reality.
Once you at least add an heavier gun than the pistol to the medic, I'll play him 24/7!
Also, have it like it is atm, just place out a kit somewhere on the map, then everyone wont go medic.