Um...no, just no.
"NewAmiga"? Just the term makes me want to slit my wrists these days.
Calling it an "Amiga"? I get stress headaches almost immediately, with the immediate thought that, "Someone feels impelled to drag that corpse around again".
Without consideration of the legal issues, the limited market, without...a real point to it all.
I'd contract these guys if I wanted a Galaga cabinet recreated. An Amiga? Not so much.