Board Thread:Skyrim/@comment-13670863-20150408221950/@comment-6881629-20150409105830

With that character i would destroy them the only really useful thing you'll be missing out on is Shadowmere. The Dark Brotherhood missions are much better with a sneaky character and all their armor is light, i would (and did) make a new character for them and the Thieves Guild with mainly light armor, sneak and archery (and a dagger for the sneak perks). But its completely up to you.