The line has only enhanced the ability for officials to call charges and increased the frequency. If a guy looks like he has remotely good defensive position and looks like he's close to outside the arc, its almost always a charge. But its no surprise, any time you specify a rule, its going to lead to more frequent calls (either way). The thing the arc has decreased is no calls. And in real time, it would be nearly impossible for an official to make the call on this play, its a guess either way.