i was just playing my dagger assasin today and i was bored so killing the gaurds in their beds and i just thought of it, what do you guys think of having a lvl 60-80 perk from sneaking that allows you to use sandman like from fallout 3 (if you didnt know sandman is when you cut somebody's throat while they sleep, and it has a cool little animation and keeps you hidden) and thoughts appreciated =)

Considering 30% of Skyrim's population never sleeps, There's not much use for it.

The only things I manage to kill while they're asleep are Draugr.

basically everybody i have seen sleeps? they just go to bed at 2-3am,
and you would be able to kill them like this, sandman would just give you the option to kill them or pickpocket them, and with 60+ sneak they shouldnt find you