it will definitely nerfed I guess, but it takes time to test some options. Makes no sense to increase the fuel cost to 5-10, when the OKW starts already with 40 fuel.
Actually it does, delaying puma and flak HT, increasing window of opportunity for allies to use light armor against it and most of all, it will put a decision on OKW players-early trucks or early vehicles.
Stat changes are not the only way to balance a unit.