Comment Re:GET READY.... (Score 1) 242
The Time Lords granted The Master a new set of 13 regenerations. There's a lot of implication in on-screen dialog (e.g. The Brain of Morbius) and implicit statements in the Big Finish radio plays that the 13 regenerations is something that's imposed by Time Lord society to prevent stagnation by having some turnover in population. Given that the technology exists and that he's no longer bound by the social obligations of a dead race, there's no reason why he'd continue to be limited to the 13 regenerations.
The only reason for the limit is that if it's unlimited then it makes the character invulnerable. This is why they portray the regeneration as something traumatic and like a death. Making the technology to grant him another 13 something that was difficult (and dangerous) to access would fill this - he can have another 13 any time he wants, but there's a danger that he'll die trying to get them. The other suggestion was to have someone else take over as the main character. I think they wanted River Song, but that probably wouldn't go down too well. I'd like to see them find Susan and have her inherit her grandfather's TARDIS.