All the aircraft in dcs are missing a very important part of operating an aircraft. Engine management is so important, older jets you get compressor stalls etc but not modeled here.
The prop aircraft are pretty lifeless, they start up the same each time, there could be some variety and dynamics to the engine. Mag checks are usually important and if you sit at idle you will feel the plugs or the engine will cut out, this is all stuff that could make the sim so much better!