It's a matter of prioritizing the systems you want modelled and how in depth you want to see them. The two reasons I voted realism "lite" was that current and foreseeable future technology simply can't recreate the complexity involved in flight, avionics, weaponry, etc. Secondly, the LOMAC community is small enough without making it tougher for a newcomer to get a foothold on the learning curve.
My first priorities would be realistic weaponry and then AFM. It's a long list after that. I would love to see the F-15's MFD actually be an MFD. ATC and AWACS need a lot of work. Avionics in general could be greatly improved as far as complexity/reality. Although I don't see a need for general improvement in graphics, there are a couple of "glitches" that I would like to see addressed. Namely, burning ground objects and fog. But those are way down the list for me.