Great post, and I especially like the bold part.While discussing the intricacies and dynamics of interpersonal relationships between sexes in an academic manner, may be interesting, and men appear dominant, you could be missing one small detail?
"Happy wife, happy life."
You've got it right, that men and women can play different roles in a relationship, depending on personality traits, but I wouldn't get overly caught up in analyzing sexist generalities, simply because people are too complicated. There are some common occurrences (truths) that you can talk about to other men, but I'd caution bringing them up in front of women, even in an educational form. The same way they talk to each other about the "dumb dog" traits, common in men.
What really makes a couple work is a partnership, where each one supports the other. If you care enough about your significant other, you'll be amazed at what you'll do and change. When there's an unspoken loyalty and respect being exchanged, you develop a level of transparency and trust that surpasses all the little character flaws, defects and gender defined proclivities to embrace a greater union. There is no "boss", chief or primary personality and though one or the other often leads in the dance, they must always be aware that there is "no dance", without a partner.
If I ever took lead for my family, it was out of love and servitude, not for my ego.