Wondering about the data.

It would be like a WK making every monster weak to Fire. No more restraints on where he can train.

also the heal weak monsters have either horrible drops or the drops were good at the intro but were over hunted and thus the drops are now worthless

Just think if everything had no elemental disadvantage then everything with a decent hp/exp ratio would be good and anything that had decent drops and low hp is where you can train and make good money which is also good.... pair this with using no pots with the heal/mp eater combo