For Ready-Go's, it's certainly the fairest way to split the pot. I've always wondered why there had to be a winner in those when all the rest of the prizes simply got split amongst all those tied with the same score.
It's also interesting (in a good way), that the very people who stand to potentially gain the most from the current tie-break procedure, are the same ones who are requesting the change to a fairer system.
For the majors though, I'd say a playoff is definitely the correct way to handle it.