When loading a rom directly from a GoodMerge compressed romset (inside a 7zip file), it would be useful to be able to indicate which rom should be loaded based on its region. Also, no idea if this is already the case, but additionally being able make sure just good dumps are loaded would be great.
Multiple roms per archive are not supported under our current implementation of File Extractor, we may be able to implement it based on desmumes method.