I read somewhere where they aren't doing the alien planet thing because the computerized cgi stuff is "too expensive."
Also that they don't want to do the alien landscape in a quarry or forest because it's not well-recieved by critics/fans, and that it's too star-trekky. Too star-trekky? Excuse me, but isn't this really a sci-fi series?
So, what I think is, is that since the advent of the internet and computerized images...humans are losing their suspension of disbelief..and their imaginations. I mean, yeah, with computer imaging, you can imagine anything..make anything possible--but where is the real imagination? Ey? The one we had as kids, when we picked up a dustbin lid and a broom handle and imagined we were knigts in armor? Oh yeah, they have video games now..no need to pretend, ey? When I see a quarry on Doctor Who, or a cave or whatever...I see an alien spaceship, a cavern, a rocky desolate planet. I don't think, "oh gee, this is too star-trekky" or "gee, where's all the fancy special effects?" I just enjoy the programme. Because without good writing and acting, all the cgi in the world won't help Doctor Who be truly great.
That's my opinion, and I'm sticking to it. So there. 
Well, it's off to bed for me. Gotta' pound the pavement and look for more jobs tommorrow morning. 
