What if the the Vanguard, Prowler and Lightning tank could be outfitted with wheels instead of treads? Wheels could improve the tanks top speed and change the handling to be like a sunderer. To compensate for the speed increase, the tanks turret options could be limited to a selection of smaller guns: lower damage, higher rof etc. As for the Magrider, give it a special thruster that improves top speed and armor at the cost of the ability to strafe. Perhaps my suggestions are not the best way to do this, but I think the core idea is great food for thought. It could add whole new vehicle experiences without SOE devs having to create all new vehicles.They can just take the current tanks and modify them; make them more customizable. There are only two chassis options for tanks. Certainly, there is room for a third.