I managed to sneak in a little bit of building, despite Nurgle's best attempt to "bless" me.
I wanted a Boss in the Skarboys. In game terms he'll be the one with the Bosspole, but I wanted him to be bigger than the others, so out comes the AoBR Boss. I cut into his shoulders to narrow him a bit and used normal Nob arms:
I also cut down his backpack so he didn't match the other bosses who are using this body. I'll cover it up with some gubbins later: