Hi guys, thanks for posting here, and for the kind comments - very humbling.
I little update... Over the last couple of months (March 2012 - May 2012) some key changes were made to WP Symposium to make it more akin to WordPress in the way core tables are used (for example wp_usermeta and wp_options).
Things are not back to normal in the way new features (rather than back-end changes) are released. For example, last weekend saw an upgrade to the gallery to allow comments on photos and see all album thumbnails (and remove the reliance on Colorbox that was causing the odd incompatibility issue where site admins also use Thickbox to view images on their site).
This weekend sees multi-line activity boxes that stretch with content, among other small bug fixes (and more probably). The weekly releases keeps things exciting and fresh.
The priority of developments for WP Symposium is set by Bronze members at http://www.wpsymposium.com/voting - I hope that keeps the development roadmap in line with what site admins identify as key.
Regarding the http://www.wpsymposium.com website, it's full of brilliant people, they make developing WPS so worthwhile. I don my hat to all of them (and send them a virtual hug at the same time!).
Finally to note, as WordPress releases come out, WP Symposium is tested against each to ensure compatibility.
Many thanks again, cheers!
Simon (WP Symposium developer)