Shouldn't SMN have a 1.5s GCD cast during Titan instead of being instant?

[redheadturk]

I am fine with SMN's instacasts. In fact, I prefer not being a glass turret. But I want my dots back.

[Rithy255]

I am fine with SMN's instacasts. In fact, I prefer not being a glass turret. But I want my dots back.

Isn't that the point of physical ranged though? Summoners meant to be balanced around other magic jobs.
If summoner wants instant casts 95% of the time then it should do less DPS then it does currently.