For me, at least, it was getting to revisit this monster of a brawl from Bard's Tale I. Really, best fight of the mid-80s.
Baron Harkyn's army. Four groups, each of 99 berserkers. The first two groups (and your first 3 guys plus any summoned critters, like my dragon) can melee . . . and your melee guys can kill at most one each per turn. It takes about 10 real minutes of fighting to get through this brawl.
Oh sure, you can disguise yourselves as members of his fanatical army using robes you found earlier . . . but then you miss the brawl. Do you want to win the game with minimal effort, or be awesome?