It's actually a very slight DPS gain due to the attacks having instant cast; you can use them during Wind Blade's recast time. It's not as beneficial as doing the same with Ifrit-egi because of Wind Blade having a cast time, but it still remains an overall DPS gain.

(I should remake this, have BiS now...)


Looking at it as potency instead (Ignoring Aerial Blast):

Wind Blade
175 x 100 = 17500

Wind Blade + Aerial Slash
161 x 100 + 19 x 90 = 17810

Wind Blade + Aerial Slash + Shockwave
156 x 100 + 20 x 90 + 7 x 90 = 18030