I've been working on a redesign myself since it's release and already made the custom keys via these guys:
https://yuzukeycaps.com/c/a66ff8d9-a4b5-4d18-9da7-4a0b74553076
I've got other fruity versions, this one is blueberry orange pi. I've also got Cherry Apple underway.
https://yuzukeycaps.com/c/8c5ea7e5-5363-4079-9341-f2ce2e696dc3
Here's the mock-up for sizing of the components inside the original case. Hopefully I can get some acrylic cut or *maybe* 3d print some of it.
https://i.postimg.cc/jS1DwKkL/tink-pi.png
https://i.postimg.cc/hGgt7j1T/pi-mock.png
And here's the caps on the existing pi500+
https://i.postimg.cc/TwLhqsFg/PXL-20251221-135443058.jpg
Could really do with an Mmmm pi icon :)