I'm not sure how other sites like United Artists operate, but Jim Woodring got some money to make a crazy huge fountain pen. http://projectsite.unitedstatesartists.org/project/giant_ste... Maybe that model works better.
Maybe Unicomp will one day be able to afford new tooling.
I was a big Model M fan for a long time, but Topre keyboards are a lot more comfortable. And they still sound pretty excellent.
(I also like Cherry Browns, because the feeling before bottoming out is more noticeable than on the Topres. But the Topres have better build quality and ... I just like them better :)
Non start-up idea: Gloves.
The uTRON is what I consider the ideal keyboard, and it does exist: http://www.plundertech.com/utron-keyboard/
Topre switches are my favorite, and I love how it puts more load on your pointer fingers instead of on your pinkies. I'm definitely going to pick one up soon, but it will require a trip to Japan.