I've been deep in the Code Pit fighting the Orks and Goblins with a few of the staff who seemed to quiet like the next add-on for Core-Exiles. It's been balanced for time and effort vs reward and should fit nicely into your day to day activities in Core-Exiles.
I'm not going to prattle on as I've written a lengthy Primer and anything I have to say on the subject is in there :)