Nonook writes about the hanger loops:
They are definitely NOT superfluous. I find them quite handy for hanging a kilt by a peg. This can be essential. Its not, however, an issue of workmanship and easily added later.
You may like them, and use them, and good for you for doing so. However, I've got about 8 kilts currently hanging in my closet and not a one of them has these loops and I seem to get by just fine. So they are indeed superfluous, in the sense of not really being a neccesity.

Nanook also writes, of the lower strap on the right hip:
On modern lower sitting civilian or casual kilts they are without use but on traditional high rise kilts they are essential to proper fit.
I really have to disagree with you there. Not only is the lower strap not "essential to proper fit" it can actually have an adverse effect if fastened too tightly, making a crease across the front apron. Not having it allows the kilt apron to hang more natrually and move freely with the body when you stand or sit.

If you want to know why a lot of kilts today have them, read my blog post on the topic:
http://blog.albanach.org/2005/08/why...lt-straps.html