I have to say that I am really impressed by the development of VBA-M. I thought VBA was pretty much dead until I found this gem. Though there is seems to be no roadmap it's great to hear that there is still a desire to refine this project.
It's actually the GB/GBC emulation that I had suggestions for but as it's deemed pretty buggy maybe my thoughts should wait for the future... Just as a FYI, my first suggestion was going to be proper Gameboy Camera and printer emulation. But I see that's probably a little 'pie in the sky' just now.