I really liked Thunderbolts, but it's not the kind of movie I'd put on in the background—it's pretty heavy, with all the themes of depression and darkness. I feel the same way about The Dark Knight trilogy, though those films are obviously operating on a whole different level in terms of quality.
Overall though thought it was well done. The director has been confirmed to be doing the X-Men film that's coming sometime after Secret Wars, so 2028-ish.
Phase over now as of Ironheart. On to Fantastic Four.