Guild Wars 2

Problem:

Speccing into one elemental traitline often results in loosing efficiency if you swich out of that element. (Dmg specc with 30 points in Fire and extra 10% dmg in fire attunement, 20% less cd for fire spells and granting a stack of might every time you use fire spell for example).
Also the overall attunement-cd is really high if you don’t spec deep into arcana.

Solution:

Adding an additional benefit to all 4 elemental traitlines: “Lower Attunement Cd for this Attunement”. I’d suggest 1% for each trait point spent. In the example of 30 points in fire you would get the cd for fire attunement lowered by 30%.

Why would this be a great solution?

As said above, speccing into one traitline can result in the player not wanting to swich out of this attunement, because he will loose more than he could gain. That is mostly due to the long time he can’t swich back into his favored element.
With my proposed change and Elementalist could swich out of his favored attunement for some utility and swich back into it way faster, thus making it more appealing to use the full arsenal of the Elementalist.
You could even combine 30points Arcana with 30points of any element (for example when using staff) to minimize the cd of the favored element.
A support Elementalist could afford to swich out of Water to use a few skills of another Element without that much risk of not being able to swich back to Water in time.