I’ve watched it twice now and have got my head around it.
Still wish Christopher Ecclestone had agreed to be in it to play “the War Dr” as I think it would have been cleaner. But Tom Baker wouldn’t “do Who” for years and Colin Baker was pretty against it for some time so maybe…….
It is a bit of a re-boot but the Time Lords coming back in the David Tennant finale presaged that already so I don’t think that was a problem with this episode. The Dr will be going home…….