I'm still bothered by Armor Crusher and Huton personally. I can time Enochian well on my BLM and save it in the 1 second before it falls off with a Blizzard IV or a Fire to keep up Fire 3, but I've had it happen quite a lot leveling my NIN where there will be 1~2 seconds left on Huton, I do Armor Crusher, and Huton falls off right before it connects and then Armor Crusher does not renew it. Not sure why it can't renew it if you execute'ed it while Huton was still in effect, it works like that when I throw a fireball on BLM and it renews Astral Fire, and there's even more travel time because of magic obviously for latency and such.