The other planets aren't quite like Neptune, regarding what makes them prominent. If Uranus is unaspected, it gives genius in an area, having to do with the house it is in. This is from Lady Maxine, she told me this years ago.
This is only for Uranus, different rules apply to different planets. Remember what she wrote about Saturn not being aspected, causes major instability, lack of beneficial Saturn energy in the person.
I will write more on the planets, this is just a short answer for now.