All the talk on the Old God Baby really comes down to this.
The DR was a choice, in some outcomes a child was never conceived.
It's pretty much now to be expected that the OGB wont play a huge part in any DA sequel because of the fact for many players, it never was conceived. How it will be handled in the new DLC is going to be extremely tricky. Frankly I'm surprised albeit worried that it's being handled in a DLC. To continue the Warden's story who knocked up Morrigan, you have to write up that story and all the consequences of your actions, then same for the Wardens who didn't follow through with the DR and never engaged in romance with her, then the real kicker, the newly made character that is a choice should the player decide not to import a previous save.
To me that tells me that either A) This will be one hell of a DLC! (my hope) or

This will be a very hastily done DLC that wont quite fit the bill (My fear)
All I know, is Sept 7 can't come too soon for me, and the forums are going to explode!