I'm assuming it will be a mini x86 machine with some kind of DosBox skinned launcher. If so I'm not sure I'd be interested. I'd rather go and rescue a 486 and build it out to be a retro gaming machine. I do miss the old days of command line interface, clunky GUIs, and Windows 3.1, but not enough to spend money on a less than authentic experience. Mini keyboard? Nope. Model M or bust.
All that said it is a neat idea and I hope it gets more people interested in older computer games. I desperately want to see more people rediscover the entire PC retro gaming scene. Sure, everyone remembers the Id titles, but Commander Keen, Cosmo, Crystal Caves, Blake Stone, Biohazard, Duke Nukem (the platformers, not the 3d stuff), Raptor, and so many others were great games I'd love to see more people play. I'd even like to see people get into the roots of current games, like Warcraft and Tomb Raider... and I just talked myself into looking for an old project PC.