One other seat company that might want the case would be Russell Day Long. They make a whole new seat and are known for comfort. The seats may look a bit strange with side wings and all but they are function first ideology.
I just don’t expect my new 2.5 L bike to be more than it really is. A large naked cruiser with monster torque that is fine for day cruising. It is not a touring bike and not the most comfortable bike in my garage but tons of fun. I understand trying to make it the best for you but that can run into money and you are still limited by the basic frame and build of the bike. Good luck guys.