Just skimmed my gameslist, and as noted it will display JOYSTICK, but be it 2/4/8 way is not shown.
I'd suspect this is more a MAME thing as opposed to MALA.
Gotta just again profess my love for MaLa, I've never taken the time to tweak all of the options, but so cool using buttons on the control panel to jump a letter, switch orientation, etc.
I really must do this on my cabinets.