Naturally, people will always move to the best or easiest thing to use. Because shotguns were so good, nobody really saw the potential of snipers. Now that shotguns aren't as good, snipers have their time to shine. There isn't really an issue with snipers in my view. They are perfectly balanced. Aim assist isn't too high, and they aren't one shot body shots anymore. If snipers and shotguns get nerfed, then the fusion rifles and sidearm will be complained about next. It is a never-ending cycle. This game is basically impossible to balance with the many types of weapons and archetypes within them.