At first I was surprised that so many of you love Supaplex, but then I remembered it was made in Europe and so would have been more accessible for you than it was for people near me (i.e. in Australia). I don't think I've heard anyone talk about that game outside my family before; pretty sure my dad...

I have an idea, although it doesn't really address the problem: Make the slowest belts free. As in, don't require them to be assembled at all; give every player an unending stack tied to either the first or last belt slot from the beginning of the game. It wouldn't change how belts or bots are used ...