Another theory we bandied around chatzy last night concerned who and what exactly is Solas. It was mentionned how the orb, in the game files, is called Mythal's orb, and not Fen'Harel's orb. What if Solas isn't a god at all? He was born in a small village, just as he told the Quizzie (he isn't known to outright lie unless he's really stuck, and he pretty much volunteer the information on his youth). He was a solitary youth with the powers of a dreamer (thus is exploring of the Fade). What if he was found there, by Mythal and taken in by her? Could he have been a slave himself at some point? Could it be why he finds the vallasin so distasteful? In any case, Mythal gives him an orb that allows him to access some of her powers and he perhaps serves as her guardian wolf, Emeral Knight-style. Or maybe he become, a bit like Ghil, a new addition to the pantheon (if that is the case, I like to believe it was by his own power and smarts. Imagine how prideful that would make him!)
After Mythal is betrayed and kill, he does the only thing he thinks is right and organize an uprising against the gods. Maybe the taint has addled them by that point and he sees no other solution than to emprison them behind an eluvian. But, just like Thelm in Liza's theory of Tyrdda's story, it takes all his energy and he lapses in uthenera until he wakes again to see the consequence of his acts.
The interesting thing with that theory is that, if it's true, it brings some new meaning to the reveal at the end. The orb is broken, so he can't access Mythal's power through it anymore. But Mythal gift him the biggest part of her own powers, leaving only her godhood for Morrigan (when I watch it, I always feel like Mythal is the one to initiate the transfer. After all, by that point, she's much more powerful than he is). Does that make Solas, from now on, a god? Or at least makes him as powerful as one, in a way that he never was before (with the orb, most of his power was separate from him, and easy to steal, if Corypheus is anything to go by). Now, they are integral part of him.
We might be completely in the left field here, but I thought it was an interesting theory. Thanks to everyone who was in chat yesterday bouncing ideas with me!