i think a minimum input mechazilla.io run would be interesting to see, so I'm suggesting adding a category for one.

What does "minimum input" mean? Do you mean least amount of time a button was pressed?

Would be very difficult to set this up because it would require some kind of standardised software. However another category which would work well is having the light on the tower never go out, i.e. not damaging the tower.

Would also be funny if there was a category requiring the light to be damaged at the end of each level

+1