The USAF went for decades successfully training in an all jet aircraft environment with the T-37 and T-38 trainers. I see no reason to waste developer time and resources developing civilian prop planes or trainers for DCS. I include the T-6 with this category. Learn to fly the Hawk, L-39 or F-5 if you need basic flight training.
IMHO, we are in desperate need of additional and larger areas to fly. Scenery/terrain development should take priority over any additional efforts on civilian prop aircraft. It is after all, Digital COMBAT Simulator ...