I am starting to get dizzy, why all the hate Walter? Wheel spacing is not standard while wheel diameter is? Should we revise the definition of standard, not necessarily as applied to the bike industry perhaps?
If you ask me that is the one thing that is standard (just multiple standards) or otherwise how exactly could you effectively fix the wheel to the frame? Arguably, the 26", 27.5 and 29" are less of a standard since their actual diameter changes with the width of the tire, and a 2.35" from Maxxis is not the same size as 2.35" from Schwalbe for example. When you setup your computer do you enter the wheel size as 26, 27.5 or 29 or as in effective diameter/ circumference? that should give you a hint (I haven't done that for ages, new computers probably don't even need that because GPS, right? That's how old I am)
Moneywise, I can tell you from my direct experience that I just bought two sets of super boost hubs (not sure if the + goes in there or not) for exactly the same price if not less that a boost set (one Hope and one DT Swiss). Not planning to move from 12x157 in the near or distant future, I probably won't even be able to ride a bike in the near future given my age. That wouldn't make me diss on a 15x160 axle if there was one with at least an effort from the industry to justify its existence.
That said, the reason I suck and fall continuously is not because of my bike 135 QR or 26" wheels or antiquated frame geometry, it's because I suck and probably I am too old for it anyway, i do not expect my super boost bike to change that much (well, maybe the 29" wheel will help a little)...