I'm on the same boat. I really really want it but the boost options are so limited. I love spank wheels and just heard directly from them boost is not coming out soon. Only true options are chappy sram wheels, custom set with hope pro 4 (just announced) or i9 hubs or their own wheel sets.
What is the difference between Pro 2s and Pro 4s? Im okay with the Pro2 Evo 40t I have on my DH bike plus the price I get them for is correct. All my other bikes use 240s and one set of 350s. My friend has been running I9 classic hubs on his DH bikes for a few years now without issue, price may be my issue.
I have zero 650b bikes so rear hub spacing isn't so much an issue. I was looking hard at the Aurum with its 142x12 rear spacing as it would allow myself to swap wheelsets if and when I went 650b. The 650b Operator is coming with Boost 148 so that is a possibility as well.
I likely could get a 16 Trance Advanced 1 complete for the price of a Troy frame/fork but those 17.3" CS are the same as my V10C. Plus I would have to order a 36 for the stock 34 (Had a 34 on my Chromag, switched to 36 when they came out)