At the risk of whipping a dead horse, like all companies, plastic ship kits manufacturers observe their profits as the bottom line. The enormous cost of issuing a new kit is a risk. Cutting new dies is a major expense and a gamble that kit manufacturers can not afford to make. That is why they stick to the same old tried and true like MAYFLOWER and CONSTITUTION et al. I firmly believe that scratch building is a way to avoid this frustration.
The late Harold Hahn is a great teacher of scratch building ship models. If one can read the English language, you can scratch build, believe me. I have made three models from his instructions. Reading Hahn's directions is as if he takers you by the hand and walks you step-by-step through the various stages of assembly. For the beginner of scratch building, I would highly recommend Hahn's book "The Colonial Schooner, 1763-1775" and start by building the HANNAH, one of the first vessels in George Washington's navy. This ship is simple in construction and rigging at the basic level.
Once the scratch builder has mastered the different steps of scratching, then there are more complex vessels like the 74 gun ALFRED to challenge the modeler. All plans are sepertate from the book and must be purchased by Harold Hahn's son living in Ohio. Consult your computer for additional information.
Amazon.com has 35 copies of "The Colonial Schooner", at $21.98 per copy. Or, one can go to E-Bay and see what they have to offer. Try scratch building. You might like it and post your work on the Forum.
Happy modeling Crackers