During a necromancer playthrough, it would have been wonderful to use the Create Undead spell to summon a Death Shepard as a temporary fifth team member that can take over undead thralls and lead them. Or, alternatively, being able to select multiple thralls and then send them to one position with one click. I've spent quite some afternoons ordering a dozen thralls about, noticing we went the wrong way in the sewers, and then spending another thirty minutes to turn that train of rotten meat around on its tracks.
