I just visited the Century Martial Arts website and looked up hakama pants. We use them as ceremonial dress in the ISKA Black Dragon society meetings. I was checking current prices.
The web page said: "Pleated style historically worn by the Samurai to hide leg movements and give the illusion of floating."
Hakama were chaps, historically worn by the samurai to keep horse sweat off of their delicate silk clothing.
Some time ago I got fed up with the eight-foot-long straps and the intricate instructions for tying the knot in front. I cut off the straps and sewed on velcro instead. I am the envy of all my friends. I used the extra strap material to create an eight-pointed knot (the ISKA logo) that I just slide on in front.
At our most recent Black Dragon meeting, my hakama was slipping a bit, and another sensei had a real problem with his hamaka dropping down around his knees. I looked on the internet, and sure enough, it is possible to buy "black dragon suspenders." We are now all equipped with this useful hakama accessory.
Tradition is not a suicide pact. We don't have to do things the stupid way just because the Japanese never invented belt loops for their trowsers.
And I don't know why anyone would think that a hakama hides leg movement. Wishful thinking there.