I would love to see a quest line that allows you to oppose the thieve's guild. I RP a freelance thief, which is something that the TG should not be fond of. There is even some dialog that does a bit more than hint at that. It would be great if, after a few freelance jobs, the TG used the DB to come after you. A quest line to do in the TG would complete the job. There is so much dialog in Riften (Mjoll) opposing the TG that it almost begs for a quest line.

Thoughts?

I agree, I would rather oppose them.