If for some reason things don't work out there TRG is most likely right up your ally. We're relaxed on a whole but set our minds to getting things done once a plan's in motion.
As for infiltrator use, we always need at least one on hand and I do play it myself a fair bit (much more once I get armstance). Even had a nice gal drop hacking terminals and turrets while taking the point and staying hidden, remaining unseen as long as possible, preparing the base for the zerg to arrive. Result? One amp station (or was it a tech plant? I forget) gutted from the inside out and easily taken over.
Here's the outfit site if you're interested and not currently in QoQ. I haven't seen it myself so maybe it's out of action?
http://www.trggaming.net/forums/content.php