[Update]
As part of the transparency that I promised before, here's what I've been working for a while now. If you check back, you'll see my first prototype of interchangeable stems for mx, topre, and etc, but I decided to just dump that project. I didn't really want to show or share this info as I wanted it as a surprise at the end once the MX gamer set is done. Check out what's coming back!
this will be called T800-H, a hybrid MX and Topre compatible keycap. This T800 is smoother, bit more detailed compare to previous one. I like the end result of this prototype. It fits snugly in both MX and Topre board and height is just perfect for the common SA and Cherry profile keyset.
And Regarding the MX set, I'm still working on it. 12 caps isn't easy to work on, plus this this one.
on my MX board
on HHKB Pro 2
Hybrid Stem