I wont pretend to know a lot about BLM, but the changes to Thunder baffle me a bit. The change to make it proc while adjusting stances I didn't mind, it was interesting/nice to have an instant cast GCD at the ready. But the way the DoT functions now ot feels off. You swap stances every 30 seconds or so, usually less for Ice phase, but the DoT is longer, and its always refreshed. Wouldn't it make more sense to frontload the damage and shorten the DoT? Or, make the buff for the DoT stack like old-school Ruin IV. Or just make it similar to the old Thunder, that as long as a Thunder DoT is on the target the damage is frontloaded and refreshed.

Can someone who really understands BLM help elaborate on what Thunder is supposed to be now? It feels odd getting a proc and not using it since you are waiting for the previous DoT to expire.