I don't see the big deal about the DA Keep, is not like it'll mean much in game besides some changes in dialogue & an occasional cameo
Well it allows us to set the game state for DAI, but everyone that have played the previous games know what the choices are already.
I suppose people want to know because they want to know WHAT is recognized by the keep, but I doubt there are really any surprises.
Of course, there is also that portion of the fanbase that want to know if there's an option to kill off Leliana permanently...but other than that I'm not expecting much.