How about droids that have some kind of force drain preventing you from effectively using your force near them.
They can be the bad ass security for the imperials... i'm thinking men in black style, pistols, sunnies and a deadly variety of combat techniques, but the whole time they're fighting in style.
These are the bots you've always wanted to dispatch.
Just and idea,
"Who's the more foolish...the fool or the fool who follows him?" -Ben Kenobi