we don't really know what that "hump" is on the 093B, right?
Yeah, it's still a bit of a mystery, however the noise being made from a variety of places seem to heavily suggest it is to accommodate VLS.
Personally I can't imagine what else it might be. It's all wrong for a drydock shelter, and there are no indications it's for docking a mini sub (not to mention those are relatively specialized capabilities for delivering SOF and I can't imagine PLAN putting those capabilities at the very top of its demands for SSNs).
I suppose it could be just a bulge resulting from additional interior volume possibly to facilitate noise reduction or other internal subsystems... but I imagine it would have been easier just to lengthen the 093 instead rather than insert a rather significant hump.
So in my mind I can't see PLAN willing to sacrifice the drawbacks of a hump (even if it is relatively small as on 093B) for anything too "trivial".