There's also been talk a long time ago about adding the ability for the user to double-click in between column headers to size the column to fit. This wouldn't impose a big performance penalty because it would be a one-time hit, as opposed to something that were calculated every time the TableView were asked for its preferred size. Would this feature meet your needs here?
I think it would actually be easier (and preferable) to simply add support for default-sized columns in TableView.
G
