Some of the Racial skills definitely are OP and should be changed. As far as I know, Zumi tanks are the most OP if they build it properly. Makes it impossible to kill them 1-on-1 if you can't match it.
Halfkin Ranger are pretty OP. Their 6 sec stun + Fear afterwards compared to a Human's -Pierce resistance debuff. The time duration of Stun + Fear is enough to kill a person fast if you have the stats.
Ursun Illusionist with their Fear status racial skill + 20% Mcrit Rate + Sleep + Aerolite = crazy. Yes, the Fear skill is only 3 seconds but a lot can still be done under that 30 seconds if timed right.
I kind of feel that Human's got jipped the most in terms of Racial benefits. We may have Gem crafting, which is essential to improving gears but it still doesn't make up for the lack of decent skills.
Some zumis at arena are abusing the pull skill, like they will get me stuck on purpose. So annoying. I heard that the racial pull skill of zumi is banned at Taiwan EE though(Arena).
The game itself has too many blank spots that shouldn't even exist, like the ability to get dragged into a pillar when a pillar really should be solid. I know one Zumi who abuses it every time in PVP because that was the only way he could win. Haven't seen him lately though and I didn't get screenshots of all 3 rounds. :x