I never liked frames and have almost never used them. I use CSS for positioning and other things, and a table for the base layout.
The site looked simpler when I had plain black (and once I had grey), but it lacked a sense of being "finished and complete." I'm thinking.
Thumbnails on the front page. I initially had the slideshow autoplay on the front page but people complained of visibility conflicts with the page, so I believe that I am going to have to separate photos from text and consider some downward scrolling to be a necessity. I do need to add some pictures to the front page somewhere. I have to try to use the "a place for everything and everything in its place" planning method next time I redo my website.
Muslin backgrounds are used in some instances and not in others. I know for a fact that they still get used for standard, traditional portraiture, which is one of the styles I am most comfortable with. It's not edgy work, but edgy doesn't fit my personality well and I find that I struggle when I try to do that kind of photography, though I keep trying to understand it.
I'm not nearly as experienced as you are, but I do claim that my photos are better than snapshots most of the time, and I do know how to adjust white balance and exposure, which some of the local photographers don't do.
I understand what you mean about marketing now.
I care if someone who puts out snapshot-quality work and gets $200/hour for it actually gets the work, especially if it's work I would get otherwise, for less money while providing a better product. I'm not top quality, but I do a better job than they do, and it irks me to think that they would be able to get any work for that price.
My website has been a bone of contention for me for a long time: I don't get many viewers, so I have been trying to figure out how to make the most of out the ones I get by improving my website. It's due for another rehaul anyway (usually I do that once every few months), and I started last night.