Suggestion for potential done right

Anyway, bonuses to accuracy and avoid are junk only because the stat system for them is junk. If they made them more useful, then maybe more people wouldn't mind and complain about getting them. They could even implement accuracy and avoid into the damage multiplier or formula for some classes that would actually benefit from having lot of it.

From Pre-BB times, accuracy actually mattered to extent, archers were actually needed for certain mobs to be hit that other classes couldn't. It mattered to especially for warriors that actually bought stuff with accuracy on them. Now, the accuracy is based on level range and the accuracy stat is pretty much useless. Other stats like defense and avoid won't matter that much either unless you have a lot of it. Some classes will never be able to achieve that much for the player to even care about it.
Speed and jump can easily be maxed by other methods than cubing equipment for them.

They never had an intelligent method of implementing them, and it's silly to handicap someone in every way possible to force you to rely specifically on a class or level. Even in pre-big bang, all it did was handicap you to a maple weapon that had accuracy on it, or made it slightly more tedious for warriors.