Hmm, I guess it depends on wherever you find working to the BW scale easier than the FW scale. I find working on FWs easier than BWs simply because of size of components but then again, I've gotten better at building over the years so I guess it is down to preference. A BW is definitely easier to manage size wise.

what changes to shu are you planning?
Shu! is going to be fully rebuilt for its v3.0 build. Gonna try and aim for a 15cm square machine with 8mm hollowed out HDPE bulkheads.