Song of Flame kind of looks like a reworked Radiance mixed with ArcSolar Soul, obviously no Fireborn, but that's understandable. Doesn't seem too powerful offense-wise, but it has a lot of buffs going for it, so a smart Warlock can use that in their favor.

Hunter's got a teleporting Silence and Squall paired with Bladedancer, that is pretty scary. (Can't wait to see people warp outta the map with this trick. Cheese Forever, Guardian!)

Titan's new Super (bad news, mains—your 50th roaming) has a partial Ward of Dawn covering that seems to act like the Vortex shield from Titanfall, a.k.a. grabs projectiles and energy thrown at it and fires it back at the enemy. What I find pretty cool though, is that Titans can drop these Void axes that allies can pick up and use to damage enemies with. Great for clearing rooms or ganging up on a big boss with. Don't know what that would mean for an enemy on Crucible though.