A good measure on tracked vehicles to see if you have the ability to keep one maintained , I think is the ratio of running time or play time to maintenance time .As in for every hour you run a tracked vehicle how much time do you need to spend working on it .
Perhaps those member who own a tracked vehicle can fill in the details on the chores that they have to do to theirs such as track adjustment , greasing , track and running gear inspection .mileage of tracks and or track pads .