I like the Bane-swapping idea because he has a huge range. However, I'm not sure that you'll need Lobot. The Sith can't do end-of-round swapping due to lack of tempo control and the prevalence of it in other factions. So their swaps need to be mid-round. Therefore, having a bunch of fodder activations probably won't help you all that much. The beautiful thing with the Sith, though, is that they can easily do mid-round swapping because of Sid's Pawn (activate Sid, pawn a Massiff and run to desired location, swap with Bane, then activate Bane and let him lay the smack down).
Some decent low/midcost figs would help the squad far more than a bunch of fodder. Therefore, I suggest dropping Lobot for 2 KelDors, since they are reliable shooters and if you Pawn them once and zap with them adjacent to an enemy, they'll explode for a total of 70 points of direct damage to that enemy (be afraid, FlObi!). Having two of these guys in addition to Bane is a really scary thing for your opponent...oh, and Sidious isn't a bad attacker either.
Another option would be to work in an R7 Astromech Droid, since you can Pawn it for a second override, which is a tactic that could catch your opponent off-guard.
