Sorry it took me a while to get back to you.
I can appreciate your concerns about the details and policies you mentioned. They are not trivial or simple matters.
This forum is very diverse, but it is really not a venue for the complexities of political science, which is more of an academic affair since there is a copious amount of material generated in that field. When you get into politics that deep, you are usually going an undergraduate unless you are so endeared to the subject that you get your nose in the books and come out for coffee and donuts.
I also think that many political topics require some background information and are always amenable to debate. While people tend to shy away from political arguments due to emotional reactions that generate incongruity, argument in this sense is both a testing ground for ideas as well as a petri dish for potential synthesis due to the dynamism and contextual relationship of political debate.
I do recommend reviewing the political thinking of the Enlightenment era to get more familiar with the precursor to our current system here in the US. The Declaration of Independence is really the outcome of the political thinking and debate of that period and it strongly influenced the framing of the Constitution as well. Those documents, of course, were not a spur of the moment idea, as we know.
There are videos on YT that cover the Renaissance and Enlightenment, and many videos on political subjects. I like the Crash Course series as excellent primers and much is covered in short time in their European History and US History playlists. The history is not only useful as a basis, it can spark new ideas and ways of thinking. Oh, and Noam Chomsky and others have some good thinking along political lines. I find him invaluable just for the amount of research and information he brings to the table.
To answer your question, we could start from the caveat that to retain a republic/democracy requires and informed and vigilant citizenry. In that respect, I always applaud those who dive in and engage with philosophical contemplation in general. While you are facing a David vs. Goliath scenario as an individual, it makes sense to consider that what you learn and think, when others are exposed to it, can have some effect, no matter how minuscule. In fact, there are many writers and even YT channels that are in that process. In that case, yes, it is always valuable. In fact, it is essential.
You may not like some of the topics that she brings up, but I find that Natalie Wynn has a lot of insight into the "politics" of the Internet social sphere. She has an academic background and often shines some light, (in entertaining and humorous ways) on that sampling of cyber-social-space.
Of course, the topics you were providing as samples are a matter of more in-depth discussion. For instance, Europe has countries with multiparty systems and there are pros and cons to that so investigating their results might be insightful, particularly in regards to the UK and the Brexit fiasco in progress. I would keep in mind not only the history of the US government in comparison, but the demographics may also play into a multi-party system here. So far, having one is always countered by the threat of drawing votes a way from one of the two major parties as we have seen.
As per taxes, I think we have to pay attention to the regressive nature of taxation when we consider changes in this country. I am not in favor of any taxes that put more of a burden on people who are on the verge of poverty or already immersed in it. The growing inequality here is not only indicative of an imbalanced, biased system, but it represents a danger for all concerned as well as a deprecation of the important value of the commons--which is symbolic of the original, founding concepts of the common will for the common good--which represents the common "space" of our society, to me.
This could get too long, but again, I appreciate your curiosity and attempts to incite discussion about this. I have opinions about some of the other points, or course, but covering them in one comment would not be prudent. It is by way of point/counterpoint that ideas are tested, tried and decided upon as viable for enactment.
= new reply since forum marked as read