skill readiness = energy available

As a warrior you have many skills that can only be activated when you have enough adrenaline. When you dont have enough adrenaline, your skill is grey'd out, so its obvious that its not ready. As your adrenaline builds, the skill button slowly brightens up...

Id like to suggest that the same "grey'd out skill button system" is also implemented for skills that require ENERGY, not just adrenaline related skills - so if you dont have enough energy to cast/use the skill, the skill button should be grey'd out. I know that during battles this would REALLY help people to see which skills are available and which skills are close to being available again.

Actually they do have that already. If your energy level is below a spell's casting requirement, the skill button would grey out. However, it does have the "charging up" color effects like Adrenaline skills.

But on the other hand, why do you NEED spell buttons to charge up? You can easily tell what your energy level is. And frankly, you better know your spell energy requirement if you are equipping the spell

No they don't have it already. At least... If they do, it's dissapeared from both mine and my GF's games.

And the reason I think I agree with this idea, is simple. As a ranger, the attribute points I put in to expertise lowers my cost per skill. Now, this number does not change on the skill it self, it still says something cost for example 10 energy, when in practicallity it costs 7.

The amount of times I've pressed a button and it goes "Not enough energy" it would help to see that I can not currently cast that skill.