If it's mainly a celebration of the last eight years, with a bare minimum of references to the classic series, then they should stop calling it a fiftieth anniversary celebration. Just sticking Tom Baker's scarf on some random woman, and having UNIT turn up, are hardly what I call fitting throwbacks to the past.
I have to agree with The Mirrorball Man here.
Fandom and Moffat have had two entirely different ideas about the anniversary special.
For fandom, it's a special episode to celebrate fifty years of Doctor Who.
For Moffat, it's a special episode that happens to fall on Doctor Who's fiftieth anniversary. He said in March, when the special was about to film, that it's not "about looking backwards."
I get that fans want a valentine to the series and its fifty year legacy. But Moffat was never prepared to deliver that. He was never going to.
Then it's time he was kicked off the show and replaced by someone who genuinely does give a damn about everything that made it great in the first place.