I don't think Christopher Eccleston gets enough credit for his part in bringing DW back to our screen. He put in a strong/likeable performance throughout and laid solid foundations for DT to build on. It wasn't an easy gig for him
but he carried it off with true style and panache
I also think the fans were atrocious in their behaviour towards him when it was announced he was leaving so it's no surprise to me that he has chosen to have little if any connections with the show since his departure.
Our loss