Incomplete Astrology - Discussions, questions

Is it possible that sometimes Astrology seems incomplete to you?

For example, there is a stellium in the sign of Gemini. The person opposite also has Capricorn stelium. Suppose there is no aspects between them in any way. These two people are evaluated directly according to the Capricorn-Gemini compatibility. However, Capricorn and Gemini are incompatible on paper. Can´t the Sun of the Gemini person (which is the most important planet even if the Sun is not very important) be considered as Capricorn because it conjuctions Saturn? In some comments it is written that we can evaluate this conjuction as the Sun in Capricorn. So why is this not evaluated in harmonies? Does astrology only apply in the size of the aspect? (I don´t include houses in the work because I think they represent an area, rather than an energy.)

There are situations when I can´t quite make sense of modern planets. Modern planets have no nobility (except for the ruler). His discoveries are very recent, and many Astrologers say their opinion. I can give them meaning, since the basis of classical astrology dates back thousands of years. Because there have been many observations. Due to the humid and temperate nature of Jupiter in the sign of Cancer, it is more like a yield from agriculture. That is why Jupiter is exalt in the sign of Cancer. But there is not even such an observation for modern planets. We don´t even know exactly what they´re for. Astrology and Astronomy used to go together. Since there is no such union today, the information does not progress systematically.

Each Astrologer makes different interpretations, and there is no unity. This situation does not give me confidence and makes me feel without details. I don´t know where I´m supposed to look.