Indeed, I thought it was a really interesting decision for them to depict 24th Century Earth as Indian-dominated.
Indian-dominated? What was Indian-dominated?
That's just a few high-ranking individuals we happened to see. Can easily happen by chance. If the people of the Earth are represented fairly in our endeavours, you'd stumble into groups that just happen to be of the same ethnicity. If there's a Star Trek starship whose bridge crew is primarily black, or primarily made of women, that doesn't mean that Earth is dominated by women or black people. It's
supposed to happen.
"Dinosaurs on a Spaceship" seemed to be indicating that the Indian Space Agency was the only institution on Earth in 2367 CE capable of tracking and destroying the ship carrying the dinosaurs. That strongly implies that in this period of Earth's history in the Whoniverse, India is the dominant culture -- it seems implausible that no other nation would be capable of tracking a ship or protecting the planet otherwise.
Mind you, I'd prefer a vision of a future that's truly egalitarian. But it's easy for an attempt to depict an egalitarian future to end up inadvertently depicting a future where one's own culture dominates, because the role of one's own culture in shaping identity is often invisible. For example, I'd say that
Star Trek, in its attempts to depict an egalitarian culture, often ends up
actually depicting an American-dominated future without realizing it.
So while I'd prefer an egalitarian, diverse future, I give
Doctor Who some credit for being more aware of how an attempt at "neutrality" can turn into depicting one's own culture as the default, and therefore countering this by depicting a future in which sometimes non-Western cultures dominate without them being necessarily any better or worse than Western cultures when they dominate. It may be a less idealistic vision of the 24th Century than we see attempted by
Star Trek, but it is still an attempt to counteract ethnocentric thinking.