I've spent the past several days mercilessly camping the Lab Director in Foreman's for a CDR, and I was thinking about the Spherical robots he summons throughout the duration of the fight. He summons several, and they spin around with a beam-sword sticking out of each end, shredding you to pieces.
I was thinking it would be very nice to give crats a nano, along the lines of Lien's Crystalizer from the ToTW, which allowed them to summon these. They would take the place of charms like Carlo, and give a lower level crat a bit more flexibility.
I see them going one of two ways, either a single nano that summons a single droid which take sthe place of charms, or two independent nanos which both summon the bots, one long duration, strong bot, and one short duration, weak bot. Each of which act in the manner of the corresponding charm. This would allow the crat to have the short duration one out for a little added cover while he tries to land that first, crucial charm.
They could drop off the Director or the Director's Bots themselves, and it wouldn't require any additional tech or models or anything. Even if they're decidedly weak, I think they would be a fun tool to use, and very nice in situations where you can't land charms reliably or at all.