You can just use the macropad.
You’d end up with twice as many cursor keys (as part of the regular keyboard layout + below the navigation keys). And because of the lack of gaps, you’d need your eyes to find the keys.
The big advantage of the TKL layout is that it is ~completely equivalent to a regular keyboard. Apart from the (gaming) laptop HP OMEN, which only has a badly modified TKL version, this would be another USP for Frameworks.
In theory, the community can also make these modules.
Interested! 