A Nikon rep at a show last year told me DX is 95% of Nikon's DSLR business so I expect there will be more high end DX bodies. I too like DX because it's lighter and the lenses are smaller. One of my favorites is the 10-24mm, I'd need the 14-24mm to replace it in FX.
I went from the D80 to the D7000, there is a lot to learn about the D7000 to take advantages of it's features. I was able to do as well as the D80 in a couple of days however.
"It's not an adventure until something goes wrong." --Yvon Chouinard