"HiTech Creations was founded with a simple philosophy by Dale "HiTech" Addink in 1999. It's not to create a large corporation, a vast gaming network, or a line of online games. It's just to create a game, that is better than any other like it. Contrary to most companies, our goal is to keep the company small. We know that with a singular focus and an experienced cohesive team that enjoys its work, the production, service, support, and overall level of satisfaction will be unmatched. "
That's probably why 
Maps and skins are already done by the player base by the way.
I already know about the player created skins and maps and they are very much appreciated and enjoyed.
As for keeping the company small... one has to wonder how adding a few (2-3) student programmers would change their original intent of keeping the company small. It seems that there are 1000's of new ideas, improvements, aircraft, vehicles, etc etc (both community and HTC based) that could augment AH2, but the actual lack of manpower has got to be a factor in slowing down progress (progress can be difined very liberally, be it quality or quantity and AH2 can use a boost in both). Stop and think of *all* the solid ideas, errors/omissions, (both admitted/recognised and ignored), and improvements to AH2 that have been brought forth in these forums but have yet to get to the drawing board due to lack of manpower.
Dont get me wrong, I enjoy the game for what it is. But the thought crossed my mind since I did the same thing in my office (use local college interns to help in the office, etc).
