When or IF they come out with an Apache Longbow, Cobra or Comanche version of the sim, THEN I will too. I am not interested in flying Russian or Chinese equipment other than just to see what they can do once in a while.. As for playing and combat however, I am one that sticks with what I know and in my case, that is American and Nato equipment for me.
Personally, I want to see a integrated Naval sim integration.. Capable of full naval functionality from the destroyers to the carriers to the Marine landing craft functionality to submarines, including ICBM and SSGN capable subs.
With this DCS system, they could really make a true world wide capable combat simulation... and in essence we would actually be able to 'play' WWIII on all levels at that point.