I thought about it for a while...
And the one and only way for this nerf to be countered is to have 2 different traits...that do close to the same thing
For example a rogue with Ace up Your Sleeve and Deadshot...which both do close to the same thing.
This should counter the 50 % nerf.
But in all other situations, where you have traits that do different things....its done, its awful.
Because you have one trait improving the damage of frostbolt (nerfed by 50%)
And another trait improving the burst damage (nerfed by 50%)
Everything is nerfed 50% so you will do nothing in the end :S
my opinion