I wonder about that. If you use the whole 30 as efficiently as possible, say with procs and thunder during Umbral Ice, your second rotation might be just long enough to where you can just let enochian expire and wait the 5 seconds to refresh it.
Doesn't sound like a DPS increase, but it does sound like you're giving more leeway for procs which might be a net increase.
I don't think making thunder better was the right fix. It's like if you were having problems getting furniture through a doorway and the solution was to get heavier furniture. I guess you might have an easier time making a larger doorway, though probably not on purpose.
