Guild Wars 2

How can a class have all that quickly AoE skills?
Engi can obtain so much AoE that make him able to fight 2-3 enemy at once only using AoE. In team fight that become a real problem because when all the classes have some AoE skill, the engi can obtain that ALL his skills deal AoE damage! A engi don’t need to have a target because he can skill everywhere hitting all the enemy he want whit granades, inflicting all the damage he want from 900 of distance.

Can’t ANet do something about that? Increase the casting time of granades (removing the effect from the GM trait for example) and reducing the range distance?
How can a engi have the same attack range of a pistol using the granades? Why don’t reduce the range to 600, like the Necro skill? That can help, making the engi not able to fire granades from “safe points” and making him forced to enter the war field to throw granades.

Actually, the amount of AoE skills of the game is making all the classes that can deal AoE damage more powerfull than the classes that can not (or only with few skills)