You know what I LOVE

It hasn't been widely publicized, but in 3.1 there is a UI option to not spend all of your talent points until you hit a "Confirm" button. Because you aren't actually spending the points, it is also really fast to add ranks or remove them.

We default the tool off since having to confirm every single point you spend while leveling is kind of a drag. It's quite useful at level 80 though.