A-Net doesn't want to destroy Prophecies by releasing Factions, and changing max dmg higher on swords, hammers, bows, etc, would do just that. They also don't want to make no one buy Factions, so they aren't likely to DECREASE damage either.
I definitely have a vote for higher dagger dmg, though. Assassins don't do enough damage.
Oh, and tell me it wouldn't be cool to see like... a Killer Rabbit slaying weapon. (In homage to Monty Python, of course!)