if you want action get a SMG and play CQB. as far as support gunning goes, its a darn useful role but gets about as boring as sniping sometimes, the exception being you are still shooting lol.
my very limited sniping experience (with mah KJW M700) its very satisfying to have an almost quiet rifle that you can accuately hit people and watch em look around like wtf that come from. do I have the patience for military sniping? hell no.
Sniper: I just got a MK23 in so im going to try out your very succesful tactics
but as far as everyone wanting to be a sniper when starting out.. it took me a few years of playing to even consider owning a sniper. the most fun ive had (weapon wise) is a KSC MP7. lets ya be fast and is very accurate. My friend is kinda new and he wants a M249 so bad. (maybe the support gun is the newb fav idk)
as far as camo in airsoft goes, multicam (fall/winter) and flecktarn (spring/summer) works superb at TN fields I have played at. I remember back at MPP Atan was wearing multicam and I kept losing where he was despite constantly moving (at about 75-100yd or so).