"I am the citadel. Its part of me."
What the protheans did on the citadel was to disable the keeper-signal.
Yet Sovereign needed Saren to find the controls on the citadel and open it so Soveriegn could manually dial home to call for backup instead of just emailing the Catalyst and be all like "yo homey the signal isnt working to automaticly open the floodgate as you probably know so you need to open the gate yourself so the other reapers can come."
You advocate that it was hinted at before, yet all you speak of was contained in those last 10 minutes of the worlds worst acidtrip, as opposed to the dark energy ending that was built of and supported throughout all 3 games - right up until Harbringer blasted us in the face.
Honestly, of 8000 posts in this thread, atleast 4000 was used just to argue the ending.
We have been over this already.