Here's something so nutty it might actually have worked: a few years back Sega's Australian studio pitched an idea for a series of remakes called "Sega Reborn", which wouldn't just recreate classic games like Golden Axe and Altered Beast, but somehow tie them into the same, single universe.
You've got concept art with a pinch of news this morning, as Superannuation points out the portfolio of Kiwi artist Christian MacNevin, which contains images from a pitch for an Altered Beast remake that Sega never picked up.
The current XBLA offerings from Sega include, for the most part, games from the Sega Genesis era. Things like Sonic the Hedgehog 2, Ecco the Dolphin and Golden Axe. Thankfully, that's changing.