Aero useless for 60 Ast?

[AlphaSonic]

As an AST 60 that has Aero crossed: It's very useful. Tossing up Aero and both combusts at start of fight before you need to start healing is a great way to help out with dps. Also, on fights where you really need to be careful with mp due to heavy healing it's a nice way to still get some dps in without cleric stance and burning valuable mp.

No, just no. Without cleric every DPS spell is worthless and wasting MP. You'd better be using that GCD and MP to heal and top everyone and then cleric for 5 seconds than using a DPS spell without cleric.