I was gonna say, it would make a better TV miniseries than a movie. But it would probably have to be one of those mature HBO-style ones, a bit like Rome.
"What have you been doing since you stole that antique TARDIS of yours, since you first landed on Skaro? Shouting 'Look at me!!! I'm not fighting a war!', while you battle the Daleks all the way through space and time."