Hhmm... that could work, I know the wizard is tied to both knights dying, and most groups usually have 1 person pulled out strictly to distract the knights anyways. I was thinking you have 1 person focus on knights, as soon as the sword is down you focus fire on the knights and the wizard (should only take a few seconds with focus fire from team) since the sword runner needs time to actually grab the sword and get in position. The sword is only available for what, 45 seconds before it pops? So if the timing was right you wouldn't have to worry about boomers or wizard at all since by the time the boomers respawn the sword has poofed and the runner is on their way back to safetey anyways.
It would eat a lot of ammo potentially if you use rockets on the wizard unless primaries do enough damage to not kill rocket timing... Lots of moving parts though, but if the timing is there, it would definitely increase the safety.
Oh. You don't really need heavy stuff. Black Hammer or the Abyss eats up the wizards.
Raiding is more fun when people try out different things for the hell of it.