Well, not really, Michael as far as adjoining sections... any good diorama guy could carve the contours or use something like I did to make my hills and make them fit. Also, what about 3-d designing a long strip of terrain and then offer it in sections? A person could order section A, B and C or section B and C or section C and D or BCD... get the drift?
Are you pulling these on a vacuform or how are you manufacturing them?
Just brainstorming with you!