I wouldn't fund a console through Kickstarter, mainly because $10M is never going to be sufficient and Sega needs to build their game quality back up to what it was back in the day.
Any proper console requires multiple hundreds if millions of dollars in R&D, not to forget online infrastructure and the lack of sales on other systems.
I think they should focus on their games, take the Ninja Theory approach like with Hellblade, invest a few million per title on a bunch of smaller games, that only require a few hundred thousand in sales each to turn a profit, but go on to sell 1M+ units.
They'll hit on a few games that will sell a lot more than that, then they can invest back into their gaming business and in time they could be in a position to create a new system, but Kickstarter isn't the right place for that.
