Although I have not had any trouble with mine, it looks under designed if you will. Thanks for the post! It looks like an easy preventive fix. I also saw on some thread or another, (maybe the one you linked to), about putting a rubber adhesive nub on the button to make it stick out a little further.
Another thing I have wondered about is weather the switch gear from a Touring SE could be adapted. the Mode button has been moved to the other side so the cruise can be located on the left hand block. It also gives more functionality to the cruise, with resume/accel/coast features. What I don't know is if it can really be adapted. The ECU may use different logic to operate so it may not be possible. At the very least, wiring would need to be adapted a little since some functions have switched sides.
John Henry