Amazing idea! I would be interested in purchasing a book like that, no matter the price, of course as a real book, not a digital edition. I hope it gets real. Good luck!!
Are you including screenshots of the games? In that case, please do not use pixelated and distorted raw screenshots from MAME. It's terrible the way old games look in several retro magazines or in books like 1001 Video Games You Must Play Before You Die.