I do get what you are saying, but someone like you who requires incredibly high performance with low noise, you're never going to find the right case as is direct from manufacturer.
This is where the Arc shines, and outclasses both the 400R/500R and CM 690II. First you have an insane array of fan mounts (6-8 depending on size), by far the most configurable that I've seen in a mid tower. Second, you have internal mounting spots for up to a 360x140 or 360x120 radiator on top, a 240x120 in front, and even a 120x120 on the bottom if you need it. If you do decide to go with a 240x120mm on top, you can place the fattest 240mm possible because the case is 9 inches wide. This allows the radiator to be offset so it won't interfere with mosfet heatsinks.
Now, the cooling potential and noise isn't great because fractal fans are pretty horrible. They're a lot better than the junky 120mm's you get with antec, corsair, and CM cases, but they certainly aren't GT's or Yate Loons. That's what you really need to do with the case to make it outstanding. It's more of a blank slate enclosure that offers any combination of options between air and liquid cooling to really nail down the exact setup you want.
If you do get a good air cooling setup, I really think a multi-channel fan controller is key to getting everything just right. Between the right combo of fans and being able to dial exactly the RPM you want, you end up with a build that can be both a cooling powerhouse but won't deafen you either.
As far as finding that one perfect case, I still stand by the X900 as possibly the most perfect case designed. The only thing it's missing is proper cutouts for cable management, but since the case is aluminum, it's nothing a dremel and some rubber gromets can't fix.
I kick myself everytime I think about holding off on it when it was $250 on newegg. Such an idiot.
Though you probably know your statistic is exaggerated, for a counter point, I literally don't know a single person that builds their own rigs and uses wifi for something other than laptops/tablets/phones. I don't even know people who I have built rigs for that use wifi. About the only people that I do know who use wifi on their primary computers are normal consumers with a laptop, like my parents. That being the case, every PC building site knows that the people putting together their computers probably aren't going to be using wifi. Food for thought.