Doctor Who has passed into the realm of Modern Mythology now. Just like Dracula, Superman, and Star Trek has now become part of our "mythology". These characters and stories may take a rest from time to time but there will always be someone to come along and retell/re-imagine/re-work them. Doctor Who is just too fertile a ground for good stories to leave too long. Heck, we are still getting milage from Sinbad, Hercules, and Atlantis!
The theatrical Who movies of the '60s didn't kill a much younger series... no worries here.