Im glad to announce that after careful investigation over the class balance regarding the PvE experience i decided the following:

DW , MG and SM  increase of Defence by 25% per agility points added (similar to BK )

DW,MG and SM increase in Magical spells damage by another 10%

DW,MG and SM decrease of mana usage by 25%  , you will use 25% less mana for all magic spells.

All these changes ar applied now, you just need to relog the game by exit the game client fully and re-enter ,then the changes ar in consideration