Most of your points were not quite correct I'm not going to go over it all though. The main problem with snipers is not the gun. It's the maps. In 6v6 there is never a problem crossing the map and getting kills. Snipers are only a problem in 3v3. And really, only on maps that have major choke points and not much else.. On most maps a good strategy can counter a sniper. But in some situations/maps you have to out snipe them or you're probably not going to make the lighthouse.