I think the reason there is such a divisive opinion on this is just because of how different the class experience is in Torghast. Some classes are good enough where Torghast becomes a mindless chore, where different builds are almost all viable. But then there are other classes that are not in a great spot, where you almost need a specific set of powers to even be 1/4 as effective as other classes. I haven't played in a little while, but i remember even post buff rogue was in a rough spot where some bosses were straight up unbeatable (Synod). So to those saying it is a player problem, you might need to expand which classes you play or research on them first.