I do agree that penalties are in place for a reason and appreciate that it drives the economy. What I will agree with the OP on though is that the actual REQUIRED class restrictions are bogus.
Gear gives everyone an aesthetic difference - we all look different because we all like different looks. I'm playing a mage but I can't stand the look of robes and canvas ('witch') hats, etc... I don't want to look that way! I am having a devil of a time finding anything (that isn't white) that I CAN even wear at all around level 27-35 that isn't robes and tights, etc... So bogus. I would gladly take penalties if I could just wear what I want to wear. I like green - why are all the green outfits for botanists? That makes no sense!
I'm still frustrated...