i was actually always against the idea of "multiroling" in this game. i prefer content, where tanks are tanking, healers are healing, and damage dealers kill. instead, we get tank and healer downtimes, so they can switch to offensive and push DPS, which in the end, results in stupid out-of-design ideas of melding your SCH into Direct Hit, and PLD with STR\Crit\DH\insert offensive stat
but i guess people are used to this, some feel very accomplished for "breaking" the boundries of game design, it has been throughout the years in this game, even though devs still "try" to make things work the other way around. unfortunately, they suck at it...