It seems like, compared to the variety of 60 and 80 percent layouts, there isn't much out there for those who want a larger-than-normal layout.
I see:
* Hideous gamer boards which require custom macro software to activate the buttons
* Long-ago retired models like the Focus 9000 or Wang 724, often themselves limited in programmability.
* POS boards like the Cherry 8200 with compromises in the layout and often undesirabler switches
* Old 122s with strange mappings and odd edit blocks. This includes both Unicomp and things like Cherry 2500 series boards.
Yet the market seems completely ignored. How come? ISurely it's an obvious upsell-- buy the standard 104, or for $20 extra, get the version with an extra 10 programmable keys. Or alternatively, a sensibly priced programmable numpad.
I suppose the best route would, now, be taking a favourite 104, a $20 external numpad, run the latter through a Soarer adaptor, and package the entire thing in a custom case.