@JustinKranj That's not entirely true. When The Aztecs was written (and aired) there was no precedent for what we might now recognise as a "pseudo-historical" story. The historical ones were intended to fulfill the BBC's educational remit, and they tend to be celebrated for that these days as well. Hartnell's performance in The Aztecs is extraordinary, particularly when he says the iconic "Believe me. I know." I assume we're meant to infer from that that he's tried it in the past, with terrible consequences. It's quite stirring. And then there's something like Rosa, where rather than the whole point being to change history, the whole point is in fact trying to keep it on track.
Sometimes I say Doctor Who needs a sense of realism to work, which isn't true, because the show can do anything. But it's always better when it does have one. Apart from just thinking it's not terribly funny, my issue with "mavity" is that it puts up a barrier between the audience and what's happening on-screen. It's like we're watching a parallel universe, in which case why care?