Who gives a fuck about Sonic? I didn't after the MD era personally i.e. when he 'became' 3D. Sonic Adventure was terrible and - to varying degrees - every Sonic '3D' since has, in some way, failed to deliver. Anyway...
I'm at an age now where I couldn't care less if SEGA created a Shenmue 3 or not. I wanted it back in 02... back when I was 20 and had bags of time to waste wandering around catching genitals herpes off sailors in Dobuita etc. But, I could care less now. All that innovation and personality will be lost in a tidal wave of games that have since caught well and truly up.
If it came to reality, that Shenmue 3 were on the cards, just get the guy who has masterminded the Yakuza series this last decade. He knows what it's all about. If I'm deadly honest, I'd much rather SEGA bothered about giving us Y5 in the west instead of resurrecting Shenmue 3...