Overall it wasn't bad but I too was a bit disappointed that more Doctors were not involved in more meaningful ways so as a 50th anniversary special it just kind of felt a bit of a let down.
I would have liked to see more. But the fewer, the more they got to do. If they had added Eccleston, for instance, the show would have needed to be an extra half hour long - in order to fit in more story.
Would have been nice to see him clearly in the Regeneration scene.As for Eccleston: two things based on this episode.
1) The Zygons invasion was due to fallout from the Time War. I suspect that the many times the Ninth Doctor shows up in human history - as Rose finds in her first episode - was a continuation of that. The Doctor was fighting off alien invasions, and setting right the chaos. He was still doing this when he met Rose. The Autons were here (in that episode, and the first Pertwee ep) because of the need for a new homeworld weren't they?
2) The Shadow Proclamation may well also be a part of the aftermath, created by Eccleston and the member races, to fill the vacuum caused by the Council's absence.
Also, when the Doctor succeeds, Rassilon is going back into the tomb we first saw him in in the Five Doctors. His part in
creating Gallifrey's greatest criminal ensures that.