Okay, yeah. Lets discuss about the wording instead of the topic. Does that make sense to you? From my perspective, B tier is barely viable at higher ratings. But maybe I am just too focused onto the top 1%.
Its not imo. Like I said earlier, replace in MW+Mage+WW the WW with a Rogue, Feral, Demo and maybe even Arms and you get an equally strong comp or even stronger, right? As a matter of fact, I have even seen Mage+Boomy at 2300 mmr. 
Now replace the Mage with another class. Will you still get an equally strong comp? YOU WONT!!! So the issue aren’t the melees, even if you might think that way. The issue is the MAGE (and the MW of course, but they get their 5th nerf coming Tuesday)!!!
Bring mage on par with other wizards, and you will suddenly see a wield spread of mixed comps like Melee+Ele, Melee+Boomy, Melee+Shadow, etc. And that should be the ultimative goal. When some melee- and wizard cleaves can also compete, that is fine by me, but usually we should try to get as many mixed comps as possible into a decent state. Right now, Mage is blocking them from being successful!
That’s questionable. You are saying WW isn’t allowed to be good, but has to be bad or what is the “weight class” supposed to mean here?
You don’t like their bursty design? Okay, but now think about what would happen if they nerf it. WW won’t be viable anymore and that is a simple fact, even when you are trying to deny it!! WW players have seen that often enough now! You would need to reroll Arms or something to still be competitive! WW is NOT a niche spec, players who like the spec are also allowed to have fun!
With the latest tunings, its not outstanding, overtuned, or anything. Its simply fine! What makes it so strong right now is that a) it works good with a mage like usual when both are strong and b) it is good in killing mages because they take a lot of physical damage when a WW can reach them!
Do you still not see the real issue in the current balancing?
Fix mage and you fix everything!!