http://www.youtube.com/watch?v=I1j0LFPNVko
Not sure if you've seen this yet but it looks promising. It was mentioned that they have modeled ground effect and the lighting for the cockpits are quite stunning. I was talking to USMC_Trev yesterday and I have come to the decision of what leaves IL-2: 1946 in the past for me, lack of cockpit shadows and 3D, 6DoF cockpits. Although I find them highly entertaining, I can live without clickable cockpits. Even CloD winds up being only a few quick switches then on to my HOTAS and the Su-25T in DCS: World is a blast to fly.
So all I need are dynamic cockpit shadows and 3D cockpits. Well, shadows, 3D, and rendered trees that you can see from the side.