I'm impressed with the new M.O.X. quests. They're lots of fun. Last night, I threw together a pickup raid to take down R.O.X. It was great. First we had to wipe out waves of golems and then the boss showed up. R.O.X. is big and tall, so it felt more like a traditional MMORPG raid. Plus, it was quick. I didn't have to click, click, click my way through 45 minutes of mindless monster killing.
As for the N.O.X. quest, I did that solo. It was a little tough. I found an easy way to beat the big monster. Just pull him to the portal. It doesn't work, so you can walk right through it. I fought N.O.X. in that area. When not completely surrounded by his little golem buddies, he's an easy kill. Although, interrupts help a lot! I brought along Gwen. Since she was controlled by artificial intelligence, the interrupts were automatic.
ArenaNet, if you're reading this, you might want to fix the problem with the door.
P.O.X. is up next. I'm sad. I'm enjoying this quest but it's almost over. How are you doing with the M.O.X. quests? Did you just skip it, not bothering to log in and check it out? Did you add M.O.X. as a hero, but ignore the book and the quest? Did you get stuck? Did you complete it? (If you did, don't post spoilers on this forum.)
Basically, I'm having fun with this quest. So far, I think ArenaNet did a good job.