It would be fantastic if a submenu appears showing the clones been able to select one to plat it (like AtomicFe actually do).
Maybe it could be possible using another screen, similar to the history.dat, control.dat or hitotext screen, showing the clones of that game that are in your list, been able to select one to play it.
It is also a feature included in the to-do list of hyperspin.
And of course it would be useful, not only for mame, also for console games. It would work with a clones.txt (for example) generated by mala. For console games, you could make one being the parent (the US version, for example) and the other one the clones or whatever you would want.
I think it would be very useful.