the only real problem with non-combat missions is the speed of play. without that ak47 or whatever it's a frustrating crawl from there to here.
I have however played really good ones, the best involved vehicles which completely removed the slowness. In one, it was a storyline of getting crippled tanks repaired and refuelled, dodging land mines, that sort of thing. I'm not the least interested in race-car scenarios, that's too non-ofp for me, but certainly is a non-combatant buisiness and many people love it. For me, Tanks, were the way to go, with considerable danger all around.
The other scenario I played was as unarmed medic, now _that_, was a challenge!