If Machida were to win the next fight, most people would want it to continue to best of 5 if you know what I mean.
I have a feeling every single Brazilian fighter at 134 is going to go for a front kick KO once in their fights, the good strikers anyway. This would be hilarious, brutal, and quite eery if more than one of them pulls it off.
But according to Seagal, it's his modifications that make it so effective, and other fighters will find it very difficult. I can see Falcao and Rua trying it.