Or Star Wars. Let's talk about that cis/CIS instead.
EDIT: Here, I'll get this started. Despite them supposedly being super-powerful elite troops, the droideka design is kinda stupid. Namely, the fact that their shield closes when they're rolling. If they could keep that forcefield up in battle at all times, those things would be unstoppable! They'd be able to retreat, charge, and reposition extremely quickly, have AMAZING mobility for the CIS forces, and have killer firepower to boot. These are the things that made a pair of Jedi run when two of them showed up. Imagine that, but more mobile, and composing entire regiments of the army. There wouldn't be a rebellion; there'd be a small protest going on before droideka death army flooded the streets in a blink of an eye with invincishields raised, fired three shots each, and painted the place a nice, vibrant red.
If only.
The main concern would be that the force field power would run out quicker from being on all the time, maybe?
Though if their batteries or whatever for the things were improved, that'd be awesome.