I know the molds are made and changing them is possibly near-impossible… but what about a change that would take away from the plate?
Some people have been fans of adding Novatouch sliders to have MX keycap compatibility with their HHKBs. With the normal 1u sliders that’s easy enough. It’s just a simple swap.
For the Enter and Shift, it’s a bit more as it requires some dremeling/drilling in order to have the stabilizer work and interface with the keycap
Ultimately this isn’t the most popular mod nowadays due to the difficulties of finding Novatouches and their sliders (and the general unfavorability of 3rd party mx topre sliders), but just some food for thought.
Otherwise worst case scenario someone could just purchase 2 plates and take a dremel or drill to one of them I suppose.