That's the issue for me to be honest, IMPO a trainer/civil air-frame has next to no use for me in DCS. I mean if you want to fly from point A to point B then just use an existing air-frame without any weapons :) If you want to fly Civil stuff buy FSX or P3D.
however, from a business perspective I can see why this would be a good idea, try to get others from the other 2 sims over to DCS. but the development of the air-frames shouldn't hinder the development of the core, Combat Air Frames.
Cheers Specter