I liked the new DS9 uniforms, but only had one issue with them. it seemed that there was no standard for where someone could zip/unzip the jacket to. Some characters wore it zipped just to the bottom of the grey portion where other wore it zipped further down. As a military man that drove me nuts!
And as for the military, yep, always changing. I joined the US Army in '97
I've worn four different combat/work uniforms (BDUs, DCUs, ACUs, and OCP-A aka multicam)
two different PT uniforms
and three different dress uniforms (Class As and its variant as Bs, Dress Blues, and now ASUs)
The military loves to change it uniforms!