I think this show has a problem of cherry picking good writers to be their showrunners (at least Moffatt and Chibnall) and the skill set doesn't always transfer, and in fact the new role burdens the original role so the showrunners become worse writers. But they insist on being in charge of everything, after all they know best, they're the showrunner. Then they write too much instead of trusting a staff of writers to follow a plan. Maybe there has been no plan. Impossible to tell. I think BBC picked up on this problem, hence getting Davies back. Moffatt tried to imitate his show, Chibnall tried to reinvent its wheel. Hopefully Davies isn't here to end things and will instead put forth something that pushes the story forward that the next fool with a heart of gold can try to follow.
I don't hate any era of the Doctor but man in the court of public opinion Chibnall wasn't able to bring everyone on board. At the very least I hope a Davies can get the show to regenerate its own popularity it had in his heyday.
I don't mean to sound grumpy. I really just want consistent drip feeds. Make more and I'll watch. But make it good and others will watch...