Doctor Who Future Uncertain After Shocking Twist

There’s a lot of chatter, for instance, about the recent finale and the rather unexpected regeneration. As former writer Robert Shearman pointed out, this particular turn of events, with Billie Piper appearing to step into the Doctor's shoes, has left many feeling a bit adrift. Shearman, who penned the iconic Dalek episode, expressed to Doctor Who Magazine that he's currently in a "pull" phase with the show, and frankly, he feels the series is "probably as dead as we’ve ever known it." It's a stark sentiment, I know, and it echoes a concern about the future of Doctor Who.
He really hits on something when he talks about the pre-2005 era. Back then, even when the show wasn’t on television, things like the New Adventures books and BBC Books kept the spirit alive, featuring the current Doctors like McCoy or McGann. This gave fans a sense of continuity, a direct line to the ongoing adventures. But now, with this ambiguous regeneration, Shearman wonders who will pick up the mantle and create new stories when the identity is so uncertain. As he puts it, "No one’s going to start writing Doctor Who books with a Billie Piper Doctor, because no one knows what that means."
This sentiment is amplified when we consider the conflicting reports about future seasons. Showrunner Russell T Davies mentioned a "decision" regarding the show’s future would come after the second season aired, yet the BBC has also stated that any claims beyond that are pure speculation. It’s enough to make anyone scratch their head, and frankly, it feels like a bit of a cliffhanger in itself, even without the Doctor on screen.
So, with all this in flux, and the spin-off The War Between the Land and the Sea on the horizon, what does this mean for the future of Doctor Who? Will this ambiguity ultimately breathe new life into the franchise, or are we indeed looking at a show that might, ironically, have to focus on its rich past to move forward?