Mission, vision, goal, whatever - to me, the absolute essence of my personal participation in OpenACS is:
1) The internet can be a positive medium
2) Those of us fortunate to have the means to use the internet should pass these means on better than we found them
3) OpenACS codifies one approach to using the internet, and I choose to focus my contributions there
The next piece is, what is special or unique about OpenACS vs other software, and we have several threads ongoing on that topic.
https://openacs.org/forums/message-view?message_id=136883
https://openacs.org/forums/message-view?message_id=21496
https://openacs.org/forums/message-view?message_id=156637
https://openacs.org/forums/message-view?message_id=160479
The piece after that is, what are the tasks and features that the OpenACS community should undertake next to better fulfill our mission; primarily, marketing it so that more people use it and hence benefit from it; improving its shortcomings (in my opinion, usability, quality, performance) so that using it leads more consistently to benefits; and adding functionality that is consistent with OpenACS's unique advantages.
https://openacs.org/forums/message-view?message_id=135959
https://openacs.org/forums/message-view?message_id=110439