I've used bandits a fair bit and I'd argue that without the DMM balance changes Silver Bandits are at least competitive with Elaine and often quite a bit better. Elaine's jack-of-all-trade stats and Increase Defense denies her the DPS necessary to really make much use out of UP per kill. She has more defense but thanks to the boatload of HP the bandits actually have about the same effective health and thus can still tank many things while providing a lot more damage. The trickiest thing about using bandits a lot is managing maps where you need to create more than 1 or 2 bottlenecks and thus could use blockers that don't mind it very much when healers skip a beat in order to heal someone else.