Question

what effect do you think religious pluralism and the interfaith movement will have on the future of organized religion?

Answer 1

I believe they will strengthen organized religion. Check this site.

http://en.wikipedia.org/wiki/Interfaith

Answer 2

My thoughts are what in the world is organized religion? If you mean mainline denominations, many of them are hardly organized.

The last figures I saw was that protestant evangelical denominations were loosing followers by leaps and bounds, mainly due to the dogma of anti-science, anti-social concern, and anti-enviroment issues. Non affiliated churches were loosing followers, but not at the large clip.
I believe that the interfaith folks will put competitive pressure on the mainline denominations to forget this conservative, right-wing lunacy which detracts from the message they are supposed to be proclaiming. In the end, the mainline denominations will change or suffocate in political and social lunacy.