Personally I don't see what a new system builder guide would do differently. Nothing that's come out in the last four months has any bearing on the price/performance brackets that the TR guide covers.
Very true. For all the hype that was generated for Threadripper and i9, they are almost completely irrelevant to 99.9% of computer users. Techreport has never really focused on products in that range because most of them aren't any better for "normal" enthusiasts (not professionals) than the latest i5 or i7 K.
Desktop - i5 2500K@4.5Ghz - MSI P67A-G43 - 16GB DDR3-2133 - PNY GTX 970 - Samsung SM841 128GB
Laptop - Asus Q500A - Core i5 3210M - 8GB DDR3-1600 - 840 EVO 256GB - AUO 1080P
HTPC - i7 4790 - Asus B85 - 8GB DDR3-1600 - 64GB Crucial C300 - EVGA GTX 1050 Ti