Buffs resetting after every boss fight is the main reason that it will be 5 r/m/e DDs and a sch.
Sure you can waste a fortnight collecting your buffs again before attempting the next boss. Or, you can go straight there in the fewest dungeons possible, and kill boss with r/m/e + sch.
Either that, or people will be selling a spot in their 5-man party to a person with lots of buffs stored up.