I think that mattel should to make an army Builders of skeletor's troops, I do not know if Mattel owns the rights to these characters but these are the options: hover robots (Filmation) Centurions (motu movie '87) bone warriors (200x comics) and I do not know if any other troops.
hover robots
centurions
bone warriors
I admit that I like the 3 options but definitely I choose the bone warriors.