No, upgrade the other classes, nerf is not the solution for everything, all classes feel clunky, looking back, you had a lot of construction, a lot of fun, a unique play style, right now, everything feels clunky and boring, you just have a LOT of spells and traits that you will never use because they are useless. That is not a good game design.
The GW2 trait system should be a way of a own playstyle and build design, rigth now it's just a system where you have to pick the things that work because the other option are usseles.