Points like descendant are not real physical entities, as such there is a lower number of aspects that can be made to them.
Why? The Moon's nodes aren't
physical entities neither and they're often interpreted (alongside) with non-
hard aspects. I mean, yeah, maybe a Quintile of X with the Mc isn't as powerful than with the Sun, however
(at least from my point of view; without diving into the interesting debate) Astrology aspects aren't really based on the
physical entities sharing physical energy with each other, but in mathematical ratios, proportions and angles which shape the planets'
energies interaction (not the planets themselves [physical
forces interchange], but their energies/influences [immaterial/ethereal
energy interchange]).
That's the reason why, let's say, a square is an aspect given by 90° of distance of two points in the chart, regardless of the actual metric distance (miles, kilometers) between them.
Given this theorical framework, my interpretation of the lowered intensity aspects with the Asc and Mc points compared to the intensity with a planet is that their energy is, half concentrated in their cusp, and the other half is actually distributed throughout the rest of the house, meanwhile, a planet has all its energy condensed in one point (its location in the chart), therefore, their aspects are more sensible.
Did I express myself clearly on this? What do you think?
I don't even consider trine to ascendant to be significant.
Yeah, agreed 👍.