I keep wanting to buy a 60% board, but the thing that keeps holding me back is the lack of a nav cluster on the standard 60% layout. All of my keyboards are currently TKL (with the exception of my Unicomp), and I've realized that I never use any of the keys from the insert/del cluster. I do use the function keys, but I think I could deal with them being a key combination, and so long as Shift+Escape would print a ~, that would be fine too.
So the only thing really keeping me with an 87-key layout is the arrow keys. I know that there's the Whitefox, but that won't fit into a standard 60% case, and it requires a custom keyset to deal with the strange sized right shift (unless you are willing to deal with the version with the weird nav cluster). There's also the FC660x, but that's even worse in terms of support for custom keysets (weird right shift plus weird spacebar).
I realized that I never use the right shift or option key. I guess my typing form is suboptimal since I have to move my left hand a bit to type a capital A or Z, but since I touch type at about 65 wpm, I'm not too worried about that.
It seems like the solution might be to build a 60% board that ditches the right option and shift keys, and puts a standard nav cluster in its place. This would fit in a standard 60% case, and would work with pretty much any TKL keyset. Plus the arrow cluster is set off a bit from the rest of the keys, since it only needs to be 3u wide and you have 3.75u of space.
Has anyone tried anything like this in the past?