Balance is used as a term to indicate the, well, balance of efficiency. To make every component as useful as each other, they are all balanced to be as such, taking weight, DP, frequency, normals etc into consideration.
Physical hitbox as you put it is a whole different matter, and would require some more in-depth work in the actual model of the component, and I'm not 100% sure if 123 would do that considering his understandable lack of interest in RA2. I've never actually come across this issue, either.
Have you tried putting the weapon motors in front of the front wheel motors? Or possibly just upping the back motors and making it 2wd?
Do the spikes actually work? I thought they had normals. I'm a fan of knives, personally, but I donno if they'd be any better.
How shall I use the remaining kilograms... Or shall I simply leave them be for agility?
ALERT- Another WS coming up...
I'm fine with hugging reier