Assassins are countered 2 ways, by ritualists and by old skills of the core classes. Lets say a Ritualists spams some spirits, say a shelter and something that does damage. If an Assassin wishes to kill the Ritualist he now must kill the shelter or wait for it to expire. If the Ritualist uses a KD, then his chain of attacks is disrupted. An old skill that counters the assassin is shield of judgement(theres probably a counter from the assassins for these examples, but I don't know it), because once again the Assassin can't complete chains. My point is that Anet doesn't introduce a new skill without a way to counter it, so what if the Paragons and Dervishes(plus whatever new core skills come in) are meant to counter each other?
So I've been reading over the Dervishes and Paragon skill lists. I now know why People think Dervishes need to be nerfed. They're the counter to minion masters with one skill, the counter to poisoners with another, etc. But take the Paragon skills into account. If a team with a Paragon and a team with a single dervish go up against each other(both teams are balanced), which will win?
Because of the shouts the Paragon uses, I would think it would be that team.Shouts can't be stripped by the scythe attacks, and if you miss the interrupt your foe is simply getting more and more buffs. A dervish is a one man army, so a high buff army might be able to gang up on him despite his AoE abilities. I didn't play either of these classes on the weekend, I'm simply going from a quick read of the skill lists, so please be sure to note where I'm wrong. If someone were to load a team with dervishes, of course, this idea might go out the window.
But we haven't seen the final product yet, so I guess we'll have to wait to see on that!