I made a Monk as my 6th character after already having a Knight, and my impression from playing Monk is that despite having two stats boost their attack power, their low weapon attack and mediocre stats result in one of the lowest damage outputs in the game. This is most apparent in Colosseum where my Monk does about half the damage of my Knight despite having similar skill damage modifiers. (Before taking into account Concentration, Battle Tactics, and Fury.) Now if it was something like 80% of my Knight's damage I could understand, but 50% is pathetic. And then you take into account the complete lack of Agi to help with Crit, and it's even worse. It's bad for threat generation in parties too, as when raiding with a guildie Monk I always had to stop fighting with my Wizard because I was going to out-threat the Monk, while a swordie tank with similar gears to the Monk had no issues keeping clear of my threat.
Surely Monk should have a bit more attack then they have now, to help with the general purpose things and with threat generation. I don't think anyone is asking to out-DPS the swordies and their Battle Tactics, nor to 100% match their damage, but just for a boost to give Monks some help in a major shortcoming.
Wizard shouldn't have any trouble out-damaging a Sorcerer on a boss unless either the Sorcerer is better geared/buffed, or Embus is being used. Embus is a whole different issue.
That is the biggest issue with players who don't play Monks. They seem to think that Monks aren't that weak. Once they actually play the class, they are blown away. I remember when I first made my Rogue (I had just a Monk before that) I was simply astonished at the difference in damage. My Monk was DPS built (Whatever the hell that is) and I was just.. I couldn't believe how much better the damage on a Rogue was. I was out damaging my Monk at like.. level 30.