could astrology offer clues to people’s traits?

nope. But it does offer a nice view of the stars

When you crystallize your consciousness into physical reality, you are certainly taking on the qualities of the particular moment of physical reality that is representative of what is going on at that moment of birth. You are solidifying and crystallizing certain kinds of ideas that are representative of your theme of exploration and your relationship in the collective agreement. The planets, in the sense that you are talking about, are a reflection. And for those who are intuitive enough to use that particular permission slip in a certain way, they can see how the reflections might be representative of certain energies and themes that you've decided to explore and how they might be unfolding. But remember, it's just a reflection. The planets don't influence you, they reflect what you've already chosen. They reveal you, so to speak.

My dear friend,as an astrologer I will say,yes it is correct But for that you must consult good astrologer.

personalities, yes

yes, but remember not every quality will fit everyone.