The only thing you might be missing is that we'll have semi-decent AoE Dots you can keep running alongside a the 7 second spam.
But yeah - to get the AoE "Inferno" we used to be capable of; you'd need to stack a few NTs together. The AOE damage has increased but not enough to make up for the loss from a 7 second recharge.
I think.
As always not sure how solid any of it really is.