The SSK case has always been the issue.
Chopping off the numpad with a hacksaw and folding the membranes under is no big thing at all.
Cutting and gluing the case is the problem, it can be done but it is never perfect or strong.
If a metal case was available, then all those cheap-ass terminals could get internal Teensies and away you go.
I can imagine a market for at least dozens of those, if not hundreds, if the price could be something reasonable such as <$200 (preferably less than <$100 but that is probably dreaming). SSK fans might want to upgrade to metal on general principle.