well, I am personally very interested in the 3D toolkit, so I looked for something like a "dedicated thread." Indeed there used to be something like that, because the link appears in many messages. The link no longer works, though, and now forwards you back to the
discussion forums page. This page lists all the dedicated "boards" that exist. There are no dedicated boards/sub-forums for special topics of labview. On the upside, I found it easy to fins all messages concerning the topic by typing the search string "3d picture control" in the search box on the left top of the page.
Personally I think it would be nice to have some kind of dedicated "sub-boards," but it may simply not work, because we - the users - do not follow the rules of the game. Your question, for example, may have belonged more in the
feedback on ni discussion forums board.
good luck,
Aart-Jan van zadelhoff