I love the Model F, but I do a lot of work with math, and having a dedicated number pad is fairly important. Is there any chance you’d consider a run of the F107, or some other expanded layout. A modernized version of the F122 would be neat (I do love having spare macro keys), especially if it had a metal case… since the “real” F122s had such brittle plastic tops.

Another option I’d love to see is an alternative stem that can take a Cherry MX keycap.