Hi,
There's one thing that seems to be awkward to me. I know that a tank can sustain more damage than a crawler but on the other hand it's higher in the the vehicles hierarchy. My proposal is to enlarge tank's fire power, leaving its interaction range untouched. I find tanks useless while playing the Tokio Raid because buying a shield and a crawler makes things easier and cheaper. I can also upgrade this tandem effortlesly. To me, a tank should be a monstrosity hard to stop. This is just my personal opinion. If you have some thoughts on this topic please share it.