I've been noticing many players on the PS! server tend to count Tailwind turns incorrectly, or even worse, they don't even notice Tailwind is up at all. The animation for Tailwind is a little too simple; most players don't even realize it has been used leading them to lose their match because they were not aware of their opponent's speed advantage.
I suggest making the Tailwind animation a little more complex, such as a gust of wind blowing through the field to make it more noticeable. Or, there could be a timer or counter for the number of Tailwind turns left so that players won't miscount; Laga lost a Doubles Seasonal Tourney Match because he miscounted the number of turns Tailwind had left. :/
Just wanted to throw in my two cents, as a lot of people are having this problem. In fact, I had just played a ladder match and the guy I was playing didn't even realize I used Tailwind with Talonflame and that costly mistake enabled me to win the battle. Hope this could potentially get fixed :o