well you right, but the thing is right not only DEX gain offensive and defensive attribute compare to others
and evade in my opinion should be calculated on monster quantity you fight, i prefer game mechanics where more monster you fighting, the greater each monster accuracy against you, this at least make evade more make sense and balance, then people will start considering to fill other attribute.
This also will make solo much harder challenge so people will Start to Party more, im hoping player will start depend on each other this will make MMORPG not just casual RPG where you can solo everything.
I remember in RO(i know this is TOS not RO) Boss was so hard, u need to rely to each other, boss movement speed/damage/mob summon/area skill was so Great where you hardly solo one and start play as a Party, i loves when party because i’m not alone having comrades with same goal.

where the game was based on some stat that gain more benefits compare others. in open beta i believe majority will pick Dex build. because they already seen how great it was, and the game will lost dependency to other player.