Well basically this is a fix it thread, I've encounted a few problems in game with classes due to skills not doing what they should actually be doing, I'll post what I know of, but others can contribute too and I'll edit and add it to the thread
Segs
Blood Whip - Blood whip Reduces resistance and Crit rate, not decrease HP
Blood Mist - Decrease's Max HP, not decrease HP
Summoners
Familiar Spirit - It is meant to give a magic boost, not Poison Resistance
Staff summys - Need to lower pvp/pk modification, their kinda weak.
Mages
Statis Orb - Makes target unable to move and attack, but also is immune to all damage. Statis is also meant to block out all negative effects, like Spoiled Divinity, maybe adding bagi's resistance may help.
Energy Hammer - Hits way to much
Hunters
No info yet
AK's
No Info yet
Bagis
No info yet
Others
D Shop buffs, images are switched the other way round