Ive played stack sub long time..also my friends had opened a stack sub server some time ago both in interlude and h5 I hadd some chance to test..ofc there will be some op combos wtf are u talking about ????
in oly, ty/ol will beat almost all(u might have to lower the soul guard effect on heavy/light) ..and d.elf combos will be trash in oly..
as for outside pvp, most will make he/pal as archer or he/wk in the case 2x weap mastery stays..
I think the only reasonable thing to do would be to limit the sub options, so that tank/fighter-mage combos will be unavailable or just limit the sub options to asist-support classes only(such as bd,sws,pp,healers,summoners), that way u could maintain a more cooperative and interdependent gameplay environment to a certain extent not to mention the better balance this would provide....we wanted to implement this idea on our stack-sub project but unfortunately we couldn't find some1 to script it for us.
btw what about custom tattoos and pots??