1. Ability to ignore subfolders in ROMS directory. RC takes forever to load if you have CHD folders in the same directory as your roms.
2. Please add SHA1 info alongside the crc for the rom.
3. Use the MAMEZip compression method instead of standard Zip. Most Bittorrent sites have their roms zipped using MAMEZip to ensure constant HASH calculations. Your romset might be good, but if the HASH doesn't match theirs, it re-downloads the files.
Thanks!