OK, FWIW, here's a laundry list of features I would like. These are things you've probably already evaluated but just in case there's something you hadn't thought of.
[*] The "best answer" is with text and an icon that I can both configure myself.
[*] A moderator can turn on "automatic" best answer and then the post that has the most reputation points the "best answer" in a topic.
[*] Allow the person who posted the topic to choose which is the best answer.
[*]The "best answer" post should appear at the top but also should remain where it was posted originally to keep the continuity of the original thread?
[*]I would want you to support a second best answer or third best answer, or "nth" best answer where n is configurable.