A mod that makes you play as the follower of the Dragonborn. The Dragonborn triggers all the quests and consults you on some decisions. After the mainquest, he leaves you and you're free to do side-quests.
Seems like a major loop-hole to me.... Was it something about being in the Soul Cairn or maybe because they're lords and don't need blood or something?
A mod like Vilja except...they're the dragonborn. You're not. It sounds like an impossibly hard mod to construct since there will might be a bunch of pathing issues....