I found a solution for NeoGeo games.
I found a VERY old emulator (1996ish?) called NeoRage5x that came packaged with 181 NeoGeo titles.
It has no command line support/options, but with Xpadder set up to be used as a mouse cursor, I set it up as a direct EXE launcher in Advanced Launcher.
Can’t choose your games via XBMC, but it works.
I’ll poke around today for more FBA-friendly titles via torrents.