I imagine that once they implement the auto-attack feature BRs will be more worthy of being used (Character could still auto attack while BR mode active). once that happens i figure the existing system of two or more players stacking attacks after toggling the BR would work well in creating these types of combo attacks. Although i would Prefer to see that they be used with only class specific abilities. Two marauders/Gladiators could make Cross Slash but not a Pug. heck primarily if they gave them cooler names and more awesome animations BRs might work out fine..... maybe...