Hawke surely at some point was meant to lead the Inquisiton against Cory. And luke-warm reception of DA2 made them reconsider. And the fact that so many people got upset about the treatment of Shepard in ME3? Surely didn't help Hawke either. I suspect Bioware after that had no interest in creating a Thedas-Shepard anymore, out of fear it might end again in red/green/blue muffins send to them ^^
If that were the case, Bioware certainly hasnt learn. ME's failure is not caused by the red/green/blue ending choice although many feel that way. DA:I to a great degree shared the exact same downfall of ME3. We are not furious because honestly, anyone who loves ME as much as DA must agree that DAI does not carry the emotional weight that ME3 carried. I personally do not care for DA:I's companions (and why should I, they are all immortals and cant die no matter what) nor the Inquisitor as much as I cared about every character, race and NPC in ME. It was a 7 year journey for crying out loud.
In ME3, the final battle was rush, badly done. If they have take an extra year just for the London mission alone, ME3 would have been a masterpiece of ages. I wanted to see the assets that I have accumulated for 7 years come to bare. I want to see all my allies fighting and dying, no just a few seconds of cut scene that has no impact whatsoever, a mistake repeated with DA:I's final missions. ME3's ending mission should have been ME2's suicide mission on steroids, I am fully expecting that.
The Red/Green/Blue choices will not be criticized if they were not simply presented as choices by probably the most hated Bioware creation of all time - the Star Brat. If my assets cannot protect the Crucible, I will get the Red ending. It should not be a choice, it should have been a result of the sum of my actions, the Crucible fired and all a sudden "Ohhhh no, I killed Legion!! I must now replay maybe ME2 to make things right".
I feel that Bioware made the same mistake here in DA:I as they did in ME3. Yeah, upgrading Skyhold... recruiting agents... for? Again I stress, it is as bad but lucky for them, DA:I is not ME trilogy. I (we) do not care enough to turn into Rage Demons.
Bioware Devs reading this, please take note. Finale should be done like ME2/DAO.