(also the military thing was a bad comparison, since it always stirs up ex-military. sorry)
If there was a way to maintain or monitor threat, even if there was no actual tank class, it would make the game soooo much easier to organize. Instead its just a constant "whoever boss is targetting run like shit"
Good example: A group was doing the champion giant in Naegling, and we were trying to kite him outside the city so we could use the cannon on him, but he kept switching targets to the idiots who stood behind him, despite us yelling at them to move. If I had, say, some taunt move as a warrior, I could help the group drag the giant into fire, while maintaining threat to prevent him from escaping cannon fire.
You do realize that there is no such thing as an intelligent threat system, right? Think about it; you are describing a system wherein you basically mind control your enemy into ignoring the players who are a real threat, and instead focusing entirely on the player that they have absolutely no hope of ever defeating. I don’t know what kind of logic you’re operating on, but that seems like the opposite of intelligence to me.
The simple fact is that mobs in GW2 are intelligent, and that is why you can’t tank. They pick and choose targets by realistic logic, looking at variables like range, damage, armor, health, and yes even role. Frankly the holy trinity wasn’t tactical at all, it was simplistic. So simplistic in fact that all trinity based content could be conquered by the same bone-head strategy every single time, and players never had to actually think about what they were doing at all; just watch meters ebb and flow and keep up a rotation.
I’m sorry but your entire argument is, put simply, stupid. Yes right now with so many concurrent players a lot of events devolve into a zerg (also realistic when you think about it; if you have an army going against one creature there is going to be a lot more running around and attacking than anything else), but that doesn’t mean the entire game is mindless. I highly suggest you go try some instanced stuff like dungeons; those demand a hell of a lot more strategy and coordination than I’ve ever experienced in a trinity based game.
Finally as far as your example; this is a social and community based game. If a bunch of morons are ruining your strategy go yell at them, don’t waste time on a forum getting nostalgic for some glory days that had nowhere near as much depth as you’re pretending. Bad players do not equal a bad game, and at the risk of sounding like a troll I have to say that maybe you should learn to play before you complain.