ArenaNet is intent on improving Guild Wars 2's build diversity going forward. We know this because the company just released a dev blog detailing the team's plans for trait revisions and the like.
Why don't those silly devs just increase the power of the game's weaker skills? "Well, the problem is that then we get into something called power creep," writes ANet's Johnathan Sharp. "The power of all builds and classes keeps rising as we keep making improvements, which causes instability in game balance."
You can read about specific changes by clicking through to the full dev blog below.