Hello Nils
Thank you for raising your concerns - this is really what I planned to discuss in the near future. I personally won't attend the Clojure/Conj, but let start discussion here, and maybe do the interactive discussion over Google Hangout, or something like.
I believe that Incanter has the potential for growth, and its community is able to do this. We have several very active participants (you Nils, Mike, Alexander, and other) - maybe it will be possible to build some kind of governance group for Incanter?
P.S. I don't have much free time to spend on the Incanter right now, plus and my open source contributions are in the "freezed state" as I need to get new open source approval from my employer. I could provide some contributions, but not too much, due the load on work...