The "normal" resupply of ammo and fuel would not work properly in a game like CoH. But it does have a proper place as an inspiration for game mechanics.
Panzer Elite had cheap ammo abilities, but with absurdly high cooldown times. To rapidly recharge them you had to retreat to home sector, OR be in a proximity to an ammunition halftrack.
I feel Relic dropped the ball on OKW resource strangulation. Remember their "unique resource system and territory capture method" promises? Well tough luck, by the time WFA alpha ended there was nothing left but a flat penalty.
I was hoping "running out of fuel" would be included in the game. I think it would be a pretty cool way to balance the superheavies and totally in keeping with OKW design manifesto. Imagine if Jagdtiger or KT was on a 3 minute fuel counter and after that it was "out of fuel", unable to move, and you'd have to click on an ability icon that spends 30 fuel to reactivate it for further 3 minutes.
Well at least one guy got what i was going for.