After having finished what is my 2nd GOTY (preceded by Skyrim), I have a feeling that I NEED more missions, more wacky story. This is the only game ever so far that has me craving for a proper DLC mini campaign, I already miss all the crazy cutscenes, sharp dialog, and mission design.

I haven't read up on news regarding Saints, maybe theres one in the plan, maybe they said they wouldn't do it, buttfuckit, I want some more.

This game made me want to switch companies and work for THQ/Volition.

You can currently purchase a "Season pass" which entitles you to several packs they are releasing down the line, so I'd say it's pretty much confirmed.

Yeah, and from what (little) info they've released on the DLC packs that come along with the "Season Pass" they all seem like they're single-player focused.