Quote " : to enable quoting of a post from another topic. Currently only posts in the same topic can be quoted. Also would be good if quotes linked back to the posts they are from, and the quoted players names included a link back to their profile.

Player : to put a players name in your post with all the usual links & stats popups that are available when players names are displayed on the site.

Game : to provide a link back to a game, possibly one in progress / include the game on the page? I appreciate that this is mostly possible using the FEN/PGN string and/or a link, but this would provide another method which could be added to. Possibly make the game's id available on the game page and pressing the 'game' button would popup a dialog asking for the game id. The current state of the game would then be displayed in the forum post, with a link back to the games page.

All very appealing features.