Sega just has so many dormant or almost dormant IP's, and the IP's that aren't dormant are often questionable in quality (e.g. Sonic).
Where is Virtua Fighter, Shining Force, Panzer Dragoon (besides that remake), Phantasy Star (that isn't online), Crazy Taxi, Jet Grind Radio, Shinobi...I just feel there are a lot of missed opportunities for the IP's that they own. Heck a NiGHTS game would have been perfect on the 3DS. They did just license Alex Kidd and Streets of Rage IP's out, which is good. Hopefully we see a bit more of that.