Has anything newer surfaced with this?
They could make one that has a rotating joystick with the Ikari games, SAR, Chopper I, POW, etc.
Hopefully the sound emulation is better, many of these so far are emulating old hardware that used a seperate board with sound samples on it or Genesis hardware which we know even Sega itself is too out of it to emulate properly. I think this is the first time there will be arcade games from this era being emulated on these, so the potential is there.
Man the biggest crime it the second Sega Classics release (the red controller). If you can't get the sound on Gain Ground right then do the right thing and DON'T publish it before you commit seppuku.