On the contrary, I see more and more people vaping. The fact that their are so many gum, patch, and medicinal drug commercials attests to vaping taking "traction" against tobacco and pharmaceutical companies. (jeez, another commercial just came on...)
At first thought, I don't know if forum presence is a measure of market influence. That would need a study.
The "values" of MODs going down, I take it that you mean the monetary value? VV/VW MOD technology and competitiveness are way up. Not only are U.S. manufacturers competing with each other, but China, Hong Kong, Indonesia, etc. have very strong influence in keeping prices low.
As to high-end MOD developing, it seems like it would only be a niche portion of the market. I have a custom-made MOD, but so are REOS and others. One area that seems to be growing is the "Build your own" market.
Hopefully, others will weigh in.
Edit: Jeez, the time it took me to write this, so many others jumped on to the same idea.