The trinity, or role based combat is replaced in GW2 with twitch based combat.
Your never going to sway all the Anet fan boys and girls that the trinity has merits. They love their twitch game, however that is not what many of us look for in an MMORPG.
PUGS have a terrible reputation in GW2 for the simple reason that you never know what role, if any, your teammates will choose to play, so every PUG dungeon run is an exercise is blind terror the first few encounters as you learn which of your teammates is capable of twitching fast enough.
How good you are at surviving boils down to one skill, reading tells and being fast enough to avoid the following attack. Everything else is just icing on the cake. Some people are very good at this, but most are not, so PUGs tend to be a comedy of errors, interspersed with breaks to kick people who don't twitch fast enough.
Instead of playing wack a mole with health bars, in [email protected]
you play wack a mole with cool downs.
I loved the trinity in all the MMO's I have played. If I was new and having a hard time finding friends, I could role a healer and be in high demand and make lots of new friends. If I wanted to let out allot of aggression I could run my DD toon, and deal huge damage while a tank soaked up the mob damage and a healer made it all possible. I feeling like a control freak, I could run my CC specialist and force mobs to fight on my terms not theirs.
The whole argument about 'can't run the dungeon because we can't find a tank or healer is moot. That is simply a symptom where the underlying problem is the games population has crashed at that point in time. Happens in every game at certain times of the day or night, you simply cannot fill out 6 people who want to play the same dungeon at the same time. The number of available healers and tanks tends to adjust to market demands. When there appears to be a shortage of healers, people will start to roll or bring out their healers to take advantage of this etc.
It is just tons of fun refining a particular role, and building a reputation as a good healer or tank, or CC person. With GW2 everyone has to excel at only one skill, reading tells and dodging. Your either good or not, end of story.
Face it combat in GW2 is a twitch game. It has more in common with Mortal Kombat than any MMORPG. Everything else, the spells, the weapons, the conditions etc. have very little to do with survival. So if you are not a good twitch player, you basically suck at GW2 and there is no role for you to play other than dead guy that gets kicked and blackballed.
I am not very good at twitch gaming so I loved healers and tanks.
The skills involved with doing those well had to do with knowing what to do and how to do it and did not depend on lots of micro-second twitching around.
I like the lore of the how and why of tanking and healing. It all made perfect sense to me and fits right in with the classic D and D theme.
With GW2 its just 6 players who can twitch really fast.