^I'm with you. I was merely pointing out the fact that gloating at 'a narrow-minded fanbase' seemed to be the only reason the quoted poster could come up with for changing the Doctor's gender.
In storytelling, you never need a reason to do something other than, "It's never been done before. Let's see what happens."
By that rationale, you could justify:
a porn episode of DW;
replacing the theme tune with country and western music;
killing off the Doctor entirely and having a new lead character;
revealing that the Doctor was a robot;
making the Doctor a glove puppet;
revealing that the Daleks were actually Scientologists;*
having the Doctor regenerate as a hologram;
having an episode set in a room, featuring only 2 characters, no action, but lots of dialogue full of Pinter-esque pauses.
I could go on, but you get the idea. None of these have been tried before. Let's see what happens if they were.
* I actually think they should try this one, come to think of it.
My gut instinct tells me that most of these ideas you've just stated actually carry a lot of potential. Let's see....
-A porn episode? Not possible on BBC. Although an episode that deals directly with intensely sexual themes may not be a bad change of pace.
-Replacing the theme tune? Well, for an episode like The Gunslingers, they very well could have used a different opening theme, one with a Western slant. Or, if they want to try a permanent change, they're welcome to. If it doesn't work, they can always change back. (Star Trek: Enterprise, the most mediocre of shows, had the balls to try a new theme tune. It sucked, but I respect their attempt.)
-Reveal that the Doctor is a robot? Awesome idea. Except, he's been under a doctor's care before, so the change must be relatively recent...they could reveal that the Doctor of the last half season or so was a robot. They did that in Deep Space Nine, with Dr. Bashir - the Bashir who had been there for several episodes turned out to be an alien imposter. I think you've actually stumbled on something fascinating, there. Imagine how terrified the companion would be if they found out.
-making the Doctor a glove puppet? Permanently, that would get very old very fast. But for a one-off? A special episode in which the whole story is done with sock puppets? Hell, Buffy made a whole episode a Broadway musical, I don't see why an episode of Doctor Who couldn't be sock puppets. It wouldn't be any sillier than Deep Space Nine's tribble episode.
The Daleks as scientologist? Scientology is a human construction....but I'm sure the writers could find their way around that. Sounds like an awesome idea.
The Doctor regenerate as a hologram? Awesome. Maybe that is the way he manages to live beyond his 13 lives...he somehow puts his consciousness into a hologram machine, and his 14th life is as a computer/hologram, at least until he can find some way of adding more lives to himself. The writers could probably find tons of things to do with that.
A drama with only a few characters, done with Pinteresque pauses? That is very much like Midnight. Not to mention Inside the Spaceship, the William Hartnell episode. It's a fantastic idea - they should do more of those.
I mean this sincerely - some of your ideas are fantastic. I don't personally like the sock puppet idea, or the porn idea, but most of these ideas are quite good. Why do Buffy and Star Trek have more guts than Doctor Who?