I take the callback like so: After last week, this was bound to be a slower episode, setting up the next phase of things. Those episodes may have some nice moments, but they aren't meaty. Doing a couple of BB references in the episode is a way to give it a little more oomph for the fans.
Besides, other than the Lydia/laundry sequence, what was gratuitous? We've already seen Krazy-8, and he's a vital part here (plus, I always forget that he's the guy in breaking bad, since I've never rewatched it and that was Season 1). Gus setting up the laundry is likely to kick off the split between him and the cartel, so that's significant-- and it also parallels Hector setting up his own new front. The two bosses planning their next steps.