Whew, lots to catch up on.
So the Blood of the Titans being lyrium, with red lyrium being corrupted theory.

Honestly, my biggest disappointment with Inquisition (and DA2, to be honest) was that we didn't get more information on that goddamn Primeval Thaig. The dwarves have a well-established history. Or so we thought. And then that bombshell gets dropped on us. It's driven me mad with frustration over the past few years trying to figure it out.
Are Titans mentioned anywhere besides Kieran? THE PEOPLE NEED TO KNOW MORE.
If the dwarves had a more complicated relationship with the elves back in the Old Days, that might explain why Solas is so put-out by Varric's not trying to save Orzammar, in addition to seeing parallels to his own civilization's fall.
Lyrium being either the remains of the Titans, with lots of parallels to other mythology (Ymir the Giant's blood becoming the oceans in Nordic mythology, for example.), or even the remains of dwarves compressed over time. I dunno. *sigh* I want MORE DA, stat!
Add in the Red Lyrium Idol looking like both Solas and Flemeth's post-credits tango and a representation of Mythal's murder possibly at Elgar'nan's hands... 