I have to say, I mostly agree with the OP. I don't find that sins are overpowered so much, but dealing with them is still tedious--I don't care if I've killed them more than any other class, if a meaningful percentage of my gameplay time is spent being grappled by sins, I'm going to be a little less excited about playing against them than I might otherwise. I also can't emphasize enough just how right he is about how this game punishes mistakes. As a gunner, if I make a wrong move/decision, I die. Sins on the other hand move so quickly and have so many escape mechanisms that it's remarkably more difficult to make them pay for their mistakes despite having no durability under fire.