What the main problem is, and has been since the dawn of MMO's. The main reason why there is always a shortage of Tanks, and Healers. That the majority of the player base (in any MMO) does not want the responsibility of those two roles. In any party who is the first classes to be blamed if something goes wrong. The healer, and the Tank. "OMFG HEALER L2HEAL BETTER!!!" "FFS TANK WHY CAN'T YOU KEEP THREAT GAH YOU ALL SUCK I'M OUT I HOPE YOU ALL DIE IN A FIRE!!!".