well, thats a good point
but what if a player can get Goddess Skills (wasted all his stars as an Example)....he can either quit and remake a new char or!
in my opinion, after those status r achived (str 65,agi 124) a wind Fighter should add points in this order after gaining a lvl up, u do ur calculations and u'll get what i mean:

(ex:say a player achieves str 65 and Agi 124 @ lv90)

Then it should be like this:

lv91: 3p--------> CON
lv92: 2p--------> CON, 1p------> WIS
* what has been added @ lv92 will be added on lv93,94 and 95)
lv96: 1p---> CON, 1p----> WIS, 1p----> STR
*lv97 and lv98 r the same as lv96
lv99: 2p--------> WIS, 1p-----> CON

we add most to CON coz Fire fighters r lethal to Wind Fighters
but with somehow a CON of 230+ or 200+ (which is kinda rare for wind) Wind fighters can fight Fire Fighters head on
and in WIS coz as u said, Wind fighters r Vulnerable to Magic attacks!