I just recently got a Hughes and Kettner Tube Rotosphere, and I'm extremely happy with it... but I don't have any experience with other pedals to compare it to.
All I know is that a POG2 into the Rotosphere sounds glorious.
Pretty much this. If you're looking for feedback from people who like your design, you're looking for praise, not feedback.
Critiques from people who DON'T like your design (and can articulate why) are a builder's best friend.
Some of my current favorite gnarly jams:
It would be more apt if they were referred to as "extended scale" rather than baritone, as the intended tuning is *generally* B-standard. The extended length is to help keep the low B tight, tension-wise.