Chestnut
Three things that would be wonderful:
Separate the games from the chat
Provide a 'like' or 'dislike' button for posts
Allow the OP to close the thread if they wish
I'm not keen on the 'like' suggestion, but I would love to have at least a window of opportunity to edit posts for ambiguity and/or typos after posting.
The ability to go straight to the last post on a thread is useful on other forums, too. If you have read all the posts and aren't sure of there has been another one, you don't have to open the thread and navigate to the last page.
A 'see all posts by . . .' facility can be useful too, if you want to look to see if someone has already posted something that might be relevant to what you are about to say. I'm thinking in terms of someone being ill, or recently bereaved - that sort of thing. It can help to stop tactless replies from causing hurt.
And yes. Being able to close your own thread would be good, particularly when you have had the question answered, or it has resolved itself and people keep saying the same thing over and over.