I've always wanted to command stealth kills to my follower, easy to say but not to do. I know that already exist a similar mod, but i wanted something that blends with the vanilla UI. In fact you can easely access to stealth kills if you ask to your follower!

This is how your follower Killer AI will work:

-Enter in sneak mode undetected.
-Enter in favor state (ask your follower a favor, Hold E button on him/her)
-Be sure that your follower will have the guts to kill (A Morality level of 1 or less)
-Point your target and command the kill.
-Assist to the carnage.

If the follower will be spotted their Sneak Attack will fail.
Follower's sneak level will help in being less detected.
Sneak attack will work when the enemy is Humanoid (Actor Type creature are IMMUNE to stealth kills) this because of the lack of stealth kills animations. But also to be not a too overpowered capacity.
Sneak attack will work with all One Handed Weapon and Two Handed Swords.