What I'm worried about is variety because of only having one area per planet. We've seen probably 50%+ of Old Russia, but it all has a very similar aesthetic, which is likely to be the case with all of Old Russia. And that's all of Earth right there. That one, solitary aesthetic. What we've seen of the moon has one aesthetic, and that makes sense since it's a moon.
Point being, having four different aesthetic locales is not a lot. That combined with such similar missions for everything we've played makes me really worry about this game now.
My expectations may have been too high, but clearly a lot of peoples' were, and they did nothing to try and keep our expectations in check. They've never said which planets and how many areas per planet until now. Some here will say "you shouldn't have expected anything they didn't talk about," but I think it's usually pretty safe to assume there will be content and environments beyond what they've talked about. I think assuming there would be more than four total explore-able areas in the game is not that high of an expectation.
I don't know yet if I'll keep my pre-order, but this has definitely made me question it.