Issues with Thief.
I disagree on points 2 and 4. I run almost exclusively melee in dungeons and normal PvE with S/P, speccing in serious survivability in traits (mostly stealths and condition removal) while using gear for damage and conditions. The balance is perfect. I’ve had multiple compliments in terms of how useful I am to a 5-man team, not even necessarily in terms of damage. Support comes second nature, and damage is still commendable (I am able to maintain 10-20 stacks of might just by fighting normally, pretty much negating the need for any offensive trait speccing).
As for point 4, have you ever used the spear skills 3 and 5? Infinite blocks, dodges and huge AoE damage. You’re a total machine underwater. There could be more variation in skill usage and capabilities, but they’re definitely not useless. They DESTROY.
If you want to know what my build is, just say the word.
Resident Thief
For pt #3, I am using Sword/dagger. It is a beast for AoE (Auto-attack + Dancing Dagger). The only problem of this set is the skill #3, aka Flanking Strike. It is kind of buggy that half of the time, it sends you to far right of your current position instead of the target’s back even if the target is not moving, and if the target is moving…well, you will miss the target, obviously.