Part of what makes me feel 17,1 is better is precisely to match Skylake to Skylake.
Although I have never experienced this anomaly on this build, on my HP 8300 (Ivy Bridge system), when I switched from iMac13,2 (Ivy Bridge) to iMac14,2 (Haswell), it lost its ability to enter Turbo mode. So, there are some under the hood functions that can benefit from having everything as closely matched as possible.
Once all the cons in the system definitions comparison were fixed, I didn't hesitate to switch. My last hurdle was really getting iMessage/Continuity/Handoff working with 17,1. This new Black Screen fix just makes future updates easier. At this point, there really are no disadvantages to using 17,1 and having a more closely matched chipset platform (Skylake to Skylake) can only be a good thing.