Found the clip I was referencing.
http://www.youtube.com/watch?v=935ky9L3u8U&fmt=22
I hope the Master does come back... and it seems like if they're going to go to all the trouble of rationalizing a major enemy coming back from the dead, that it's a waste to just kill them off within the same story (granted Davros is fairly cheesy so I don't mind him not coming back, especially since he's tied to the overexposed Daleks).
I can't wait to see how they'll rationalize a Dalek return 2+ years from now since they've pretty much exhausted a lot of possibilities).
Granted they brought flipping Rose back, even though that was well established to be impossible prior to it happening. Sadly she was a shadow of waht the character was in Season 1, not even a character at all really, just a 2 Dimensional archytype meant to fill a certain role (same with Mikky turning into 'generic badass'). Even Martha has suffered because she (of course) has had to be sucked into the 'cannon' of Doctor Who in some way. Let's make her a part of UNIT, they say, well, to me that just makes her less human of a character.
Referencing the big things is fine and great, but I think the season finale crossed a line. On top of 'insert mysterious military project' cliche.
Doctor Who should get back to telling well produced Sci Fi concepts, not spend its episodes wollowing about referencing the various groups and factions and deciding how best to slot in prior characters into the myrad of organizations and sides that exist in the universe. Bring it back to character/concept, not "how do we make it a cohesive universe that reminds the viewer of such".
I want to see the Universe, such as it is, grow, not constantly recycle itself while spreading out to cover more and more superfelous things like UNIT etc. Show us new enemies, and situations, Don't waste time bogging yourself down to things like UNIT/Sarah Jane Adventures/Torchwood. You don't need to contually be 'bigger better and more badass' with the stakes of the situation, either.
I mean if Moffat wasn't writing the next season, I'd be wondering how they could possibly top a threat to reality itself.