Is it possible to use the taped and covered keys on a BSSK?

I would like to configure it like an FSSK with the numblock plus arrow keys below.

Of course more switches are needed and sawin/g off part of the case too (or making a new one or whatever), I just want to know if it is possible. It would be cool if you offered it like that of course.

If yes, does this also apply to the larger models?