The elements of my preferred keyboard are already available, what I would like is to get them as a set, maybe, depending on pricing.
Layout: HHKB with no splitted right shift and 6u space bar; because I prefer the elegance of the simplicity of a 59 keys board.
Case material: acrylic, low profile, or maybe aluminum.
Key caps: GMK, a low cost set designed specifically for the board.
Additionally, I'd like to see a sixty PCB, like the GON, but with TMK.
Again, there is nothing in my wish list that is not available already, the plate for my preferred layout can be cut at local laser cutters; which is what I am doing now, and the Nerd60 support it, I am not sure if other sixty PCBs do it as well, the cases are already available from some vendors; regarding key caps, most new GMK sets run by sensible leaders include both, a 6u space bar that support 18XX and HHKB clones and the proper keys for backspace, control and bottom row, as well. The only grip is that everything should be bought independently with the obligatory shipping costs and hassle of getting the stuff separated. I am not sure if there is interest for authentic MX HHKB clones, though, because there are a few options to put together a similar layout but with a 7u space bar, that, in my humble opinion is not the same.