I'm not a "documentation expert" or anything, but IMHO I'd say there is too much information on your "landing page" and not a clear "call to action":
- How about some installation instructions?
- Basic usage? (addressing the main features, those which most users will probably use most of the time) If I were you I'd put the details about plugins somewhere in the Wiki.
I don't have a lot of spare time to check out your thing, so the project becomes increasingly unattractive as I have to waste more and more time to figure out how to use it / how to get it up and running for a basic test.
Again, IMHO, I believe this applies to most hackers, and to open source documentation in general. Very often I see great hackers who can code 1000x better than I do, but fail to write 'attractive' documentation for their projects.