I found it very annoying the "Open Rom" dialog always started in ~/.gens/. Therefor I created this patch to open the roms folder one set up. Loading from from several directories will make it open the last folder used.
*** Bug 153596 has been marked as a duplicate of this bug. ***
Created attachment 100938 [details, diff] The mentioned patch
It would be best to try to get this included upstream.
in portage. resync, remerge to get it. thanks for the bug report and patch.