In the next versions, can you create new sections for mame ? like this, in order to better manage roms, in es_systems.cfg:
.........
<system>
<fullname>Mame 2010</fullname>
<name>mame</name>
<path>/recalbox/share/roms/mame2010</path>
<extension>.zip .ZIP</extension>
<command>python /usr/lib/python2.7/site-packages/configgen/emulatorlauncher.pyc %CONTROLLERSCONFIG% -system %SYSTEM% -rom %ROM% -emulator %EMULATOR% -core %CORE% -ratio %RATIO%</command>
<platform>arcade</platform>
<theme>mame</theme>
<emulators>
<emulator name="libretro">
<cores>
<core>mame2010</core>
</cores>
</emulator>
......
and create new directories: mame2003,mame2003p,mame2010,mameadv etc..
thanks