Maybe it's my weird, stupid, naive, pacifistic-ish ways plus the fact that I play mostly healers in several RPG's, but I prefer to be more of a supportive Medic than offensive.

Too many games are about killing and looking after yourself and not helping others, so I usually like playing the under-played supportive roles (because I like to help others---maybe I'm too sociable for game-people?)
Also.... Medics are already seen as an underplayed classes in some FPS'es/games (I heard, anyway) because people prefer to kill all of the time.

So, if you added offensive,
then everyone wants to play for the offensive skills and have their cake and it too with the addition of the Medic's healing and reviving skills.
I mean, the Medic has GUNS (the same as other classes) for goodness sake. That's already a bit of an offensive skill there, lol.
And maybe the universal skills are offensive, too, for all we know. (I'm definitely getting the Downed Fire, for example).
If the Medic gets anymore offensive skills, then it's no longer a "Medic" to me, ya know? Then people will want to play for those offensive skills to kill than to help others. -_-
"Combat Medics" (those that can shoot AND heal) are fine with me.....but once you add poison and svcking life from people..... Yeah, it's no longer a "support" role or even a Medic,
and I can just go charging into battle by myself, lol. (Who needs soldiers, engineers, and operatives when you can not only kill but heal yourself and others, lol.)
Why does every game have to have everyone become a lone "super-uber-soldier" who can do everything with all of the pros and none of the flaws/cons, and kill everything without strategy? *sigh*