I'm still assembling a lot of my thoughts, but at this moment here's a list of things I definitely know I want to address. These may become full posts, some may become even more than that. Some may disappear completely, lost somewhere in the whole mind-blog transmission process.
Community as the Metric
Functionality and Aesthetics: An Essential Duality
Designing for Community
Games as Social Utilities
The Content/Community Paradox
Architecture in Virtual Worlds: Designing Structure with New Constraints
I know for certain I'll think of more shortly, and please feel free to suggest others in the comments. I'm really looking forward to writing about all of this!