I think about a few skills that need work, the rest are great.
Hundred Blades – Should hit 5 targets. The damage is good it’s just very difficult to justify using, especially in competitive play because of it rooting you in place. Should be a faster cast, let you turn like with sword burst, or be useable while moving. The first and second options are preferred changes.
Blade trail – Unlike other professions skills, warrior lacks hard cc on great sword. Guard has circle pull, ranger a stun, Mesmer a push, and reaper a forward pull. It should be turned into a hard cc skill, a block/throw skill like ranger, or something else. I doubt giving it more damage would make it super great, but it is rather low, and the cripple should be longer. Ranger gets a block, more damage, and a 5 second cripple on its throw.
Rush – It can be messy to use because it does not reliably connect and can send you in weird directions. It might act strangly because of combat camera.
Maybe more damage on autos but it is a great weapon. I can’t think of any changes for skills.
Arcing Arrow – I think that this projectile should fly a bit faster and have some hard cc. Like a .5 second stun/daze or a 240-range knockback. It is an explosion after all.
Kill Shot – Having this skill deal more damage to enemies under 25% health would make it very dangerous however, I like it how it is.
The perfect weapon.
Triple Chop (3rd chain skill) – Making this cast in 1 second might be too strong. It would feel more fluid though.
Counterblow – Having an 8 second cooldown would put it in line with revenant and guard mace.
This weapon can be weird sometimes but the buffs to it were good.
Flurry – The root here is weird and does not always work well. I only use it for the root proc, then I cancel it. It needs more damage and should be usable while moving. If it stays as an immovable cast the damage should 100% higher otherwise 25% more damage wouldn’t hurt.
Impale & Riposte – I think these skills are good, but they are never a justifiable choice for offhand skills. I feel like they need work but I’m not sure where to start.
This offhand is too good and is only rivaled by axe offhand. I don’t think a nerf is necessary. The other off hands should just be buffed.
Not usable in many circumstances but when it needs to be used it works well. A boon share on it would be hilarious.
Bleeds on more skills would help this weapon out.
Mariner’s shot – Along with more damage on distance it should apply bleeds similarly. 1, 2, and 3 bleeds for 5 seconds would be fine.
Puncture shot – Should cause 2 stacks of bleed for 5 seconds.
Split Shot – Bleeds are good, just needs more damage.
Knot shot – More damage would be nice, but it is a good skill.
Repeating Shot – A bleed on each hit for 4 seconds.
Forceful Shot – Bleed stacks per adrenaline level. 2, 3, & 4 stacks for 5 seconds.
Good weapon but more damage across the board would help make underwater nicer to play. Not a high priority.
That is my thoughts on what would help warriors fight in mainly a pvp/wvw point of view. If these ideas are bad let me know.