I just got back from a fairly long hiatus of the game and was talking to a friend of mine and he mentioned 2 things that I guess want some more confirmation on. He said that now with the legendary meta-gem and any haste procs you want to be refreshing your FS even if it has lets say ~15 seconds remaining if all you're doing is spamming LB anyway. Refreshing FS so early seems odd to me as it's always been kinda a no-no for us. And 2nd if you're using the UE talents that if you use UE and you don't cast LvB before the buff runs out to use FS anyway to get the bonus from the next fire spell dmg instead of wasting it.
opinions? lol