I have noticed a considerably slowdown on the development of emulators these days. Maybe because everyone is waiting to the PR1.2?

What do you think that are the most important missing bits to have a "perfect emulation machine" in our pockets?

This is what I miss the most:
- CPS1/2, NeoGeo. Although we have a great MAME implementation, most of the 16 bits games are unplayable or really slow. This could be improved (thanks Flandry) but an emulator with a proper GUI that uses the Cyclone m68K emulator and let you map combo keys would be great.
- Sega 16 bits arcades. The same situation with MAME, in this case the idea could be to use them with full accelerometer support at decent speed (OutRun, After Burner..., I use the Megadrive versions but they aren't really the same).
- Sega 32X support on PicoDrive (please Javicq).
- Nintendo DS emulator. I find this especially important as there are a lot of games that are designed to be controlled with the Stylus.
- PSX with GPU acceleration/better compatibility. This is coming nicely.
- N64 emulator finished. Don't really know if this could be possible.

I won't talk about other not so popular systems because, as said before, a good codebase at desktop is needed before any attempt of porting.