Here's my take on the subject:
I have used BOLD fonts for the ones that I will craft as my first Ascended Weapon if I were to craft any. There may be better suggestions. And everything is related to Player vs. Monsters. I am not a huge WvW buff and have little to no clue about WvW builds.
Guardian - Greatsword, Sword, Focus, Scepter, Shield, Staff, Hammer, Greatsword, Mace
Elementalist - Dagger, Staff, Scepter
Mesmer - Sword, GreatSword, Pistol, Focus *(Based on Khrushchev's suggestion as I have not played Mesmer much)
Thief - Dagger, Sword, Pistol
Warrior - Axe(s), Longbow, Rifle, Greatword, Mace *(I am torn between Axe and Greatsword)
Engineer - Rifle
Ranger - Longbow, Shortbow, Sword, Dagger
Necromancer - Dagger, Staff *(Based on Khrushchev's suggestion as I have not played Necromancer much)
Among all classes, I found Guardians use a lot of different weapons and use them well for different situations. GS, Hammer are really almost "Must get" weapons for them. I used GS on my guard forever and used Hammer in WvW a LOT. That said, I found Sword and Maces are very useful for dungeon plays with Offhand Staff or Scepter-Focus combo. So, today, if I were to get an ascended weapon for my guard, I'd get the sword as it is something I use often now and has the best single target DPS.
Edited by Zhaitan, 12 September 2013 - 05:53 PM.