The main problem was that having lower level flunkies around with a BBEG was a liabilty not a help.
Whirlwind attack: Attack flunkie, kill flunkie, cleave into BBEG; Whirlwind attack flunkie, kill flunkie, cleave into BBEG, Whirlwind attack flunkie, kill flunkie, cleave into BBEG, rinse lather...