To form any kind of personal opinion, I would definitely have to see it taken out of the theoretical/descriptive and more into the practical. ie. with at least one case example, even a cherry-picked one would be better than none, in this case
Several PD examples can be looked at on the website of Giuseppe Bezza
http://www.cieloeterra.it/testi.html#stelle
Using Chrome, Right-click to translate in English
In the section Example of Parents, you will find 3 cases on Death of a princess Diana, her driver and Napoleon Bonaparte.
Another interesting article is 'Of the division of the twelve houses'in the section Aspects-Houses
where he says...
" A house is nothing more than the space that a star travels and illuminates from the point of its entry into the house itself to the point of its exit. Therefore, the quantity of that house must be taken from these points and for the same reason the quantity of the three houses between the rising and the culminating must be assumed from the point of rising and the passage to the meridian, I mean the entrance and the exit of the stars from the same quadrant. The preceding proposition is therefore manifest: the space of a house is that in which the star, while passing the time, launches its influences at us in conformity with the nature of that house. And this, on the other hand, the star cannot produce except while it is in that house, that is, from the point of its entry to that of its exit,"
What I understand from what he says is that
the entrance of a planet in a House signals
the beginning of an influence in a particular area of our life. And this influence will last until it exits the House. Similar to the Ingress of a planet in a Sign.
Now, how many times in your life did you have Mars crossing your 3rd House by transit? Say you have Mars by PD
entering or in your 3rd House, this changes the transit. And this is where the Lords of the Year come into play. For example, your PD ASC is in Aries or Scorpio, you are in a year of a Profected Aries or Scorpio, you have the ASC in your Solar Return in Aries or Scorpio or Mars is Angular in any of these systems. This is what will make your commonplace transit of Mars in your 3rd House more significant.
Once you identify the influence, take a step back and look at your radix.
What does the 3rd House is doing in your chart? Do you have a square from Mercury to Mars? Do any of these 2 planets are connected to the 3rd House somehow?
If so, do you have a natal trine between both in which case it will be a temporary squermish with a neighbor or a brother.
If you have a square and one of the 2 is connected to the 8th House natally, this could signal a car accident or a more threatening passage in your life.
I am just making up scenarios here but you can see that a PD needs to be investigated further down the road to give you a better understanding of the overall picture.
Best to you,
Ouranos