Get a recumbent. LOL. I'll be reading with interest.
I hated the Romin and many other similar saddles. They are ok for 50-100 miles.
A B17 or Berthoud works for my butt. I did PBP 2015 with the Berthoud, lots of lantiseptic, and the Assos with the Kuku penthouse and did not have any butt discomfort during or after the ride. The B17 is similarly comfortable but is better on a more upright position for me. The problem with these leather saddles is the break in. It can be done with the Lon Haldeman very quickly but it takes nerve to dunk a $200 saddle.
The saddle or seat that I have not tried is an Infinity. Some endurance riders swear by them.