[RunawayEngineer]

I'm not sure that you have to account for the height of every tote that gets knocked down. Sure, it makes a difference for the score of a particular match, but a robot that knocks over a stack of 1 can knock over your sweet 42 point stack just as easily. So the number of times that stacks get knocked over and the context is much more significant. A team that knocks over stacks by driving recklessly is an instant don't pick. A team that has the same number of stacks knocked over from trying to putting RCs on a 6 stack is a different story.
Being able to keep track of each one scored and un-scored allows you to calculate the match score correctly, but that data is readily available anyway.
Scouting systems get their robustness from their simplicity. I'd probably reduce keeping track of tower collapses to 1 or 2 buttons pressed once per event, instead of 6+ buttons of which you need to press multiple per event.