From my PvE standpoint, Arsenal Merc was /is pretty much a faceroll class, with opportunities to play well/heads up. DFA was a lot of fun on trash pulls, and being a little resilient made it forgiving if I was watching the game more than my health bar.
Now, DFA is worthless, and I'm spending more time burning down AoE pulls. I'm squishier, and interrupted more often. Not as much fun.
I'm not rage quitting. I do enjoy aspects of the game, but not enough now to keep my group of friends and I from taking a closer look at GW2.
Here's hoping the team works on putting fun back into the classes instead of creating trinkets.