what exactly would the need to change about the classes themselves? Other than novelty runs, noone is seriously going to use a class over a job in PvE so saying it will affect the class is kind of a mute point.
Having 35MND on SMN is just as worthless as having an extra 35 INT on SCH. Unless ofc you are trying to argue that having the option to put in 35 mnd on a smn is worthwhile for casting physicks?