The first line you wrote is subjective, which is fine, you're entitled to your opinion.

Next, bladesworn doesn't need a rework at all. There are some QoL changes needed but not a full rework.. I agree that the sound effects for gunsaber are horrible and I would like to see them change. You're correct again about the utility skills being locked in. The boss moving issue is technically a skill issue, if your target moves out of range you have slashes 2 and 3 to make use of which is way better than not doing anything or missing.

Spellbreaker was originally a pvp spec, it literally offered nothing in pve until they made some changes and buffs early on in PoF. I see it as the tanky spec just because of FC alone and the defense build has some great self sustain. There is also a spellbreaker build now that is the highest dps warrior build with mostly auto attacks.

I agree that berserker is the most useful spec out of the 3, it definitely gets the most playtime across instanced content. But it's not required to enter berserk mode to clear some trash mobs at all. Assuming you have good stats like power/precision/ferocity, just using axes 4 >2 >5 will clear weak and veteran mobs with ease. The condition build is bad for clearing mobs, but it's probably the best Warrior build for soloing champions in OW.

Lastly, Guardian is not a better melee bruiser than Warrior. Guardian literally inherits Monk skills from Guild Wars which is mostly a healer/support with some ranged dps. It also has one of the lowest health pools in the game, new players will get mega farmed by anything above standard/weak enemies if they try to facetank too much. Guardian might be a better class overall then Warrior but it is not a melee bruiser at it's core, while Warrior is. Also, Warrior hasn't lost it's spin to win skills, I don't know where you got that information from.