First of all, I have to say that I am a big fan of yours! Love your quilting!!
As far as trends, I think that everything goes in waves. Quilting kind of dwindled in the 50's, (things went to the space age decor), late 60's and 70's hippies got the movement going again, and there was a surge in returning to your roots with quilts, antiques, etc. Before the modern trend, when you looked at the "new" patterns in books and magazines, it was the usual traditional pattern with a new name. Now the quilts have a totally different look to them. I notice with a lot of the modern designs, that there are simpler techniques, and a lot of open space. I think that the industry is trying to get some new blood into the mix, as well as new quilters.
Manufactures are still making Civil War reproductions, and they wouldn't be making them if there wasn't a demand for them. But I do see that there are more art and modern quilts at the big shows now than traditional quilts, which is kind of sad.