I think I might be on to something, but I got hit by a hell of an idea for summoning rules.
Summoning is a property associated with minifig objects and weapons for double the CP cost, whether it be a simple tool (use:3) like a rod of summoning or a talisman, or any other magical sword, battleaxe, heavy machinegun or wizard staff of summoning. At the same use for attack, a minifig may summon up to 1d4" worth of creatures (any creation with a mind). For swarms, this may also be twice as many size zero creatures. Regardless of type or size, summons will have five inches of movement and structure level zero armor. Summons must appear within the range of the d4 roll as well.
Rolling a 4 does not spill over into bonus dice, but rolling a 1 re-rolls and summons that many hostile creatures!
All summons must be sustained with an action on the caster's next turn, or disappear at the end of the turn. Tools of summoning may summon creatures as often as they wish, but once a weapon of summoning has called something forth, it will require a kill before it can summon again.
Summons that require weapons (skeletal soldiers, vietnam war ghosts) automatically arive to the party with a weapon, but abilities, extra size, equipment, and all armor require an inch off of the d4 roll. No equipment may be looted off their corpses, since they mysteriously disappear!
Eh? Eh? My only fear is how much this slows the game by. I'm imagining it as "and I summon *roll* three robo dogs," but It could take a while if someone tries to munchkin a good roll into summoning a stone golem with a machinegun, but I'd still imagine you'd have to roll a 4 with that, and by all means you deserve it by then.