There's not really an answer for me in those polls.
The Dragon Sorcerer is very much like the Wizard. By design, by intent, and so on. And, to be honest, that's kind of the point. Feedback from the playtests indicated that people wanted the dragon sorcerer to be closer to its 3e incarnation than something new. And so, that's exactly what we got. A dragon sorcerer that functioned much like a wizard. Yes, it has the metamagic, and that plays differently than the spellbook. But there's a lot in common. Kind of the point.
The real shame with the Sorcerer, in the core book, is that we effectively have just one functional subclass for a large number of players. Wild Magic, for all the fun some have with it, doesn't appeal to a wide variety of people, and the spell support (more spells with random effects, please!) for it is low. So, we effectively have to deal with just the purposely-designed-like-the-wizard Dragon Sorcerer
Now, we are looking at the Favored Soul and the Storm Origins. Completely new spells known to vitalize a wizardly spell list. The former plays wildly, insanely different from a Wizard, even an Eldritch Knight. Haven't played the latter, but there's a lot new there as well, a highly mobile class, enough to firmly register the Dragon Origin for fire powers only in my mind. When I start considering how a Spirit Shaman (another sorcerer-like class) might work, I'm left with even more vast differences from the Wizard - that'll play like the Druid!
So, after all this, what does that make the Sorcerer? Absent the Wizard-like Dragon Origin, the core class feels like.... a power-point driven, internally powered Psion. I've personally come to the conclusion that the 5e sorcerer is actually a renamed Psion with all these other subclasses as variations to make them feel more wizardly, clerical, or druidic. All we need is an INT based Origin, some crystals, and appropriate spells which seem to be standard now.
Once we get the Shaman, official Favored Soul, official Storm, and Celestial (4e), I'm betting we'll see an Ice style sorcerer, as well as a psionic Telepath, psionic Telekinetic, etc*. All told, this overview will make the Sorcerer look vastly different from the Wizard, with far different considerations and spell selection. It only looks wizardly now because of Dragon being so prominant in the core. That's going to change pretty quick from here on out, I imagine. Everything that made a Psion different from a Wizard is the same difference for the Sorcerer, just with a different name.
* Yes, I know there's more than two for psionic disciplines. I think that we're likely to get some old ones merged, but definitely more than one focus. Assuming the psion doesn't get its own class.