One thing that's bothered me for a very long time... It's not really a big issue but quite annoying. You know when you're warming up, you usually start with drives? It's probably the oldest trick in the book. Some players suddenly stop playing a drive and play a block or very slow push. The right thing to do would be to take a step forward and play a drive, but the players that do this will not get it back because the drive practically is going to be kind of a net kill. And since it's just warmup you are being nice and playing a slower upwards drive to keep it going and then they take a step forward and kill it in a way you can see they are trying to make a point and not trying to warmup.