It's not that I can't work around it. It's just that I heartily dislike the game's all-or-nothing, anti-hybrid approach to armor. Having certain abilities be all but useless against certain types of enemies can be interesting, so long as it doesn't become a tax applied only to mages or only to physical damage dealers, and it doesn't happen too often. The occasional creature with immunity to fire or piercing damage is fine. Resistances are fine. I find not being able to do anything until a creature is unarmored against the type of CC or damage a character can apply to be frustrating, not fun. It's not that having your party adapt to the occasional creature with such defenses wouldn't be interesting. It's that it makes for poor fare as a steady diet. I much prefer playing a party with varied abilities, both individually and collectively. I find it totally unfun to find myself debating whether to spec a character in a way that seems to go against their nature so that they can contribute efficiently to a magic- or physical-damage party.