One thing about the Keep that has me worried- They have set up a forum for people to suggest options that are missing or should be added to it before it is properly released...but at this stage, they obviously aren't going to add anything to the game in any way. Makes me wonder if anything is going to matter tbh.
BioWare's plan is for the Keep to be used/updated going forwards, so any decisions added could be used in future DLCs/expansions/DA 4 etc.
All of the major decisions are already included, so it won't make a difference for DA:I.