I honestly think they should just make a new Priestess class (can come from kamasylvia since theres already priestesses everywhere in Kama-Grana) to do healing and PA/other buffs. Witches/Wizards can get properly damage balances then without the danger of guilds locking out other classes from mass pvp content like seige/nodewars. There was even a guild exclusively recruiting witches and wizards and wanting NO OTHER CLASS according to their recruit ad. And before someone says: "BUT THERE ARE NO ROLES ON BDO" - sure, this might work when this game first launched and there's only like 4 classes. We're now at 16, going 17 classes with male Ranger release. To keep all classes relevant in group content, every class needs a niche that no other can fill so maybe having a proper support role or proper tanks might not be so bad.