Right now lacrosse is a sport where shorter players can play at the highest levels. There are plenty of 5'8"-5'11" attack and middies playing at the big D-1 schools. Who knows how things will change. I'm 6'4" and my son is already 6' at 13 so is isn't an issue for us. I think that there will always be a place for the smaller, shifty dodging offensive players provided they are fast/quick enough. It's one of the great things about the sport.