Is that an actual Bioware development slide? Interesting. I certainly hopes this does not mean we don't atleast get to meet our Inquisitor again in the new game
I suspect that the Inquisitor will still play a larger role than Hawke did in DA2, although I doubt the next game will have a dual protagonist or that s/he'll have as much screen time than, say, Ciri, but chances are that all the negative feedback concerning the previous protagonists and their lack of screen time in the sequels will push the writers to add some Quizzy fan service.
And frankly, if it means that we'll get less cameos in exchange for one hour selecting dialogue-wheel choices with the Inquisitor, I'm fine with the exchange.
***
We all put our Wardens through hell and back. As for me, I would be happy if mine would peacefully retire from the world. Maybe a secluded hamlet in Serault, that sounds nice.
I reiterate my preference for a nice anvil on the head followed by a tomb that reads "Here lies the Hero of Ferelden, s/he wasn't unkillable after all" during Dragon Age 5.