[Merry Mockmas]

Originally Posted by Quantum Boy

It's well established though that the regenerations are not just a "face change", it's still essentially the same person with the same memories but the entire personality can change; one of the clearest examples of that was Matt Smith > Peter Capaldi and they covered it quite well in the episode... having the dying Smith-doctor call Clara from the past to explain to her that she might have to really "look deep" to see that it's still him, because he might seem very different. But they all change their style, quirks, personal likes and dislikes, mannerisms etc... no reason different regenerations wouldn't find themselves attracted to different people.

Besides; Eccleston and Smith's doctors were blatantly bisexual-ish / "down for whatever" and Capaldi was for all intents and purposes entirely asexual. Tennant had an eye for the ladies definitely but other than that, doctor's an alien... I don't think he could ever have been classed as "straight".

Speaking for myself (and I think quite a few other people) when I say that some people do like to see traits of a character stay intact when a recast is happening, and a character's sexuality being changed on a whim after decades of the character being written to have the leading lady being his love interest, is going to feel odd for a lot of the audience.

Don't forget it will alter character dynamics when Shows do these kinds of changes just for the sake of it.

For example I don't know if you've watched Sense8? But if it got a remake and they didn't make Nomi a Transwoman who is also a Lesbian type of character, it again would change her dynamics on the Show to some extent.