I don't think there's much doubt that pre-50, Barrage's change is a net negative. That change was designed with Wanderer's Minuet in mind, and getting three guaranteed non-critical heavy shots does not make up for 10 seconds of boosted triple auto-attacks that could also crit (and often did with Internal Release and Straight Shot up). That said, we are pretty much one of the best AOE classes now, and that applies to 50 content as well. If you get your DoT effects on everything, use Rain of Death on Cooldown, and Quick Nock, you can pump out some serious AOE with a fairly low TP cost.