I just think these actors who become big because of a show
Eccleston was a celebrity and successful film/TV actor well before Doctor Who. See Shallow Grave, 28 Days Later, Second Coming. Probably the most famous a Doctor Who actor has been before taking the role.
I've always respected Eccleston for not playing the fame game. He isn't a media whore like John Barrowman and does have principles.
Yeah - Photoman has it back to front, Eccleston was cast *because* he was a well established well respected actor and they wanted to show how seriously they were taking the revamp:
I'n not sure he was every comfortable with the celebrity side of the job - McGann's a relectant one too - they act for the sake of acting, rather than to seek fame.
Chris make do secret he was reluctant to come back, he at least considered it.
As for the others, apart from Tom they are all doing conventions down under for for the next few weeks.