It's not that the designers were morons, it's that they're sadistic bastards who draw joy only from hearing kittens get run over by tractors. In slow motion. However, I noticed something in my experiences with trying in vein (vain? vane?) to beat it. The more things you try to make a character do, the weaker that character will be. You CAN have a character be a sword fighter who uses black and white magic. However, they will wind up being terrible in all of those departments. Even when I go to make someone a mage, if I try to make them good at more than 3 spells, they fall WAY behind. If anyone mentions "holy" to me, I'm going to pull all my hair out and burn my house down. Then again, FF2 just seriously hates me.