the Jester
Legend
Is this meant to be under a 4e tag? If it is then I'll just say that my first 4e game featured a Storm Sorcerer from Paragon tier through Epic (the player who played the Druid in my second game). That character was inspired by Storm of the X-Men and was absolutely awesome. Wind-riding, goddess of thunder and lightning she was. The Dragon Sorcerer in 4e was just as awesome.
I've got a bitchin' tabaxi cosmic sorcerer in my epic 4e game who has taken control of a moon as part of his epic destiny.

I'm not seeing much awesome here but I suspect that the designers would say that this is just a mobile chassis to deliver the various awesome through Sorcerous Origin.
Who knows?
I suspect you're right that the Sorcerous Origin will deliver a lot of the sorcerer's awesomeness in 5e. I so can't wait to get my PH. Still almost a month away. Aargh.