Seriously, I don't think Star Fox can be a system seller anymore in its current design. If you haven't noticed, rail shooters haven't been in style for a long time. None of the previous Star Fox releases after Star Fox 64 did well as far as I know (though I'm sure the 3DS port did alright considering people didn't have much else to buy on that system). House of the Dead Overkill wasn't a huge seller, and Dead Space Extraction really wasn't one either. Sin & Punishment 2 bombed spectacularly, and while Umbrella Chronicles did alright its sequel Darkside Chronicles did not. And that's just looking at games on Nintendo consoles. It's been rough for the genre on the HD consoles as well.
For Star Fox to be relevant again, I think the developer's going to have to take a serious look at how they can make the franchise work in essentially all "All Range mode". Personally, I'd love to put the old Factor 5 guys on that project, but I think they scattered to the 4 winds a long time ago. In any case, I'd rather put a team on reviving that series that actually has experience with flight-based games, and that's not Retro Studios yet.