I think we should have been able to trade a talent point for one attribute point.
Things like Know it All would then be traded off to virtually remove the penalty, but why not. Still costs a little bit of gold and since we only get like 7 talents, you may want to have actual useful talent anyway rather than useless talents just for the sake of trading ( though I know a few builds that may not benefit a lot from talents ).
By the way, I never tried, but is Lone Wolf tradeable ? Or Pet Pal ? I think those two must be taken at creation time so I'd wager they can't be traded afterwards, but if it was possible that would definitely be a little broken.
