I hate when I'm using the smart tool to create a crossfade and I get the "bounds" error message. It would be cool if when you clicked on the regions to start your crossfade pro tools would draw little dotted lines to show how far each region extended under the other. This would eliminate a lot of guessing. Also, a preference option could be available that when selected, only allows you to extend the crossfade out to these dotted lines. No more "bounds" messages please.