I would like to submit a proposal to the membership

[McMurdo]

While I like where you are going with this idea I am not sure about your definition of Modern Street Wear for the reasons Father Bill brings up above as well as others I will elaborate on below.
I have been a full time kilt wearer in the past I wore the kilt daily for something like 5 or 6 years. Most of the time I would be going into the office and would wear something akin to your example in the Three Amigos photo. Below is a photo of me in a fairly normal outfit for that time.



To my way of thinking even without the crommach and Balmoral bonnet this is a Traditional outfit and would not really fit into the Modern Street Wear category it also would not fit Highland Event wear as I was going about my normal business that day.