Or just a module on a vehicle that would let it reload itself and others but requires a high slot, gimping some tank or damage capability.

Well, I sort of agree, for Hybrid, Missile, and Artillery =). When Lasers come out they obviously are different and shouldn't apply =). But of course should be slightly weaker as a trade off.. Lol Anyways yeah ammo is always a critical part of supply if I had it my way I'd take it a step further and when the game moves into deeper customization have the default ammo for all weapons be 'militia' ammo, and have alternative ammo types you can buy, so that even ammo costs money =), that would introduce a whole new concept to using ammo resupply in battle =), perhaps with penalties and bonuses to how the resupply rate is effected by the different ammo types and people who use hives.

Basically in case you can't tell I'm all for moving towards anything that's more EVE like, lol Although I admit any Minmatar player in EVE would KILL for a ship sized nano-hive to go with their Barrage and Tremor ammo =P.