Hi Roman. Thought I'd chime in with a couple of features I've always wanted to see:

1. drag n drop support for chds

I would like to be able to just drag a chd into the panel to rebuild, and for cmp to automatically create the right directories; duplicating the file where appropriate.

2. download dats

Could history and mameinfo be downloaded via the www profiler, and sent into the mame root directory?

Thanks as always- keep up the great work!