I think netting to the end of the dugout was overdue. As far as extending it further, I could see it being a good idea at least halfway toward the foul pole then up to team discretion depending on their specific stadium.
I've sat behind netting and barely notice it after a couple batters. When I'm near the dugout, even at minor league and college games, I always nag people I'm with to pay attention when the pitch is being thrown. Still, I've thought what if a ball is hit toward your chest area? It's one thing to duck or move side to side but if a ball is curving and ends up in your torso, how do you dodge that in barely a second? If I turned my body and took it dead on to the side, I'd be in pain but fine. That could severely hurt a small child or an elderly person.