As much as it's entertaining that the loud minority in this thread think tanking is fine, I'd much rather they make tanking extremely faceroll so that there are actually tanks than to leave it the way it is where there are no tanks. If tanking were so fun and better than in other games, then why is there so few tanks? The answer: it's not. Or at least, not to the vast majority of people who play this game, which are indeed casual. I'm actually a former casual player myself and hardcore now, but even still, my guild which is doing Explosive Conflict right now can barely manage one, maybe two tanks at best. Our main tank is a tank alt and actually would rather DPS, but has to tank because there are none. The other tanks aren't on very much or are main spec DPS. Other than that, we have to get tanks from other guilds to tank for us because there are no tanks.
Bottom line, I don't care how rewarding tanking is in this game if there aren't even enough people who want to do it. I tanked a bit myself until I realized how bad everyone is. Every time a DPS would attack the wrong target it would make me rage and want to quit the group. Same with when a healer would ask for Guard, etc. Most people just don't know how to play and don't understand game mechanics. The game needs to be designed around that instead of ignoring it if it wants to survive any longer than it already will, which isn't that long judging by how many subs it's losing every quarter.
You say this as if a huge lack of tanks isn't an issue on every other MMO out there. it seems worse in this game compared to say WoW, because instead of pairing 3 dps per tank they pair 2 dps, raising the number of tanks needed per dps by (I believe 50%) the shortage isn't really a shortage. I'm a tank, and I find tanking in this game extremely gratifying, and would not want it dumbed down at all.