I remember looking forward to getting a Pandora[0], eventually I gave up on what are gimmick devices, most of them only sell a couple of hundreds, are yet another form factor to run MAME, and are gone afterwards just like several 8 and 16 bit devices that hardly anyone remembers.
Especially now. When the original pandora came out, the market was different and even after the years it was delayed it was still a great machine for emulation.
But now, cheap and semi-open emulation devices exist in the dozens and paying up to 10 times as much just to get linux and a keyboard is not that appealing to many people.
If they could do it for maybe <300, I think there would certainly be people considering it, but at that price (and of course the fact that it seems to never get finished) I am not sure they can rally a great community again like they could with the original device.
A community wanting such a device would maybe be better of producing a keyboard/gamepad accessory for existing hardware and hacking free software for same. The rockchip based platforms seem like a good target for example.
[0] - https://openpandora.org/