Well it depends for me. Since A-10C got new 3D models for some stuff, most notably the F-15C It would be nice if they reworked the 3D models for all the FC2 aircraft except the Su-25T (I think that's fine as it is).
Overall I agree with elchacal. I do mostly fly COOP however, and it's always nice to have air-to-air combat going on as the ground pounders do their work.