Spell speed up

[Shurrikhan]

Well it being a SS increase does technically more than increasing cast [speed][?]. That said, a reliable way to proc the buff is another alternative that I didn't mention but it still feels out of the control of the user really.

How do you mean? A 20% increase to spell speed, at base SS stat (~70 bonus), is a far cry from a 20% increase to casting speed (from 2.5 to 2.0 GCD, i.e. a BLM's dream proc). I don't think I've seen it cut more than .08 seconds personally, even with a lot more SS than I'd have liked.