I think some realignment/balance of the damage disciplines between melee characters and rangers need to be brought in line.
Trueshot has a 2 minute duration and a 33 minute cooldown.
Innerflame has a 30 second duration and a 22 minute cooldown.
I believe the rest of the main damage disciplines for other classes are similar to Innerflame as well.
Increasing duration to an even ratio for duration/cooldown to the same as Trueshot would be pretty huge to help get everyone closer to ranger damage.