Revenant Energy on attack
There are no plans to add skills or traits which affect energy gain, upkeep gain, or energy cost of skills for the Revenant. These traits very quickly become mandatory choices as it means you can use your skills more often and in the case of energy, it would apply to all your skills since they all use energy. This is a dramatic increase in power across the board.
These kind of traits makes for less interesting choices and cause many problems with balance, often forcing skills to be weaker to compensate for the possibility of a player having all these traits equipped meaning they can use skills much more often then a player without them. But of course there will be balance on on energy costs and recharges of skills to make sure everything feels good and balanced for what it does in the toolkit of the revenant.