I was of a similar mind when I was working on the update and I brought up this subject with Sam. His position was that he did not want to have a default mapping that ran counter to how the button were labeled. I think this was a reasonable position.
As such I included this change as one of the examples in my keymap guide [here], but it can also be done quite easily with the Keymap Editor add-on as well. If you wanted you could just copy the keymap from one box to the others.