A light medic could be useful, but he would absolutely need people providing covering fire. Like me, as a medium soldier. That's the plan, at least... ^_^

I said to "bait" the enemy and draw their fire.

Even a second's diversion could be enough.

Take a few shots, duck around the corner. When they think you've run away, slide out of cover firing, and disappear again. Don't worry too much about doing major damage, just aim to make the guy worry about you instead of the person you're trying to revive.

I personally see the medic as having the most potential for 'controlling' games. If you as a player have a great aim, good movement; both in combat and just in general - then you can be extremely versatile and flexible. Especially as a light, in spite of your health-handicap, you can keep your team up effectively due to your speed, and if you can combine that with dashing around obstacles and using the environment to your advantage, then I imagine you can become the most lethal player on your team on top of being a valuable team player.

Memeotis, that would surely just mean you're an awesome player...

Classes-

You can be stronger by solely speccing in one class, but you can be more versatile as well as being able to fill alternate roles by mixing and matching 2+ classes, and really cause a change in the game.