Turn NPCs Into Vampire Lords

I've had this requested a few times and it's not a feature I'll be adding anytime soon.

Amazing Follower Tweaks (AFT) is a great mod and it will do exactly what you want. It will allow you to have your followers turn into Vampire Lords when you do. It also has a ton of other features that you'll really appreciate. I won't try to copy what this mod accomplishes. Our mods work perfectly together.