Yeah. It shouldn't be a big issue that he's regenerated into a she. Regeneration, it's supposed to be a lottery after all. Like with Bill, I thought it should have been mentioned once and then become a non-issue, but it was just like, they kept talking about it like her dating choices was something really strange about her.
As the years rolled by I'd almost forgotten he started out with this short cropped hair :P The mad scientist look suits him too, and as Doctor Who it goes well with the magician coat.
Never too late to start! Apart from 11 whom I never really got into, every regeneration has been pretty heartbreaking. You inevitably start the season with I LOVE DOCTOR WHO and finish it with I HATE DOCTOR WHO.