If I could make a suggestion? I think the builds would get much more creative if builders weren't locked to ATX boards... I actually had a whole build based on the Z170I AC ITX motherboard, but now I've got to tear that down and turn it into something more conventional...
You can use Z170I GAMING PRO AC but not AC ITX.
Yes, that was my realization. If builders could use the ITX variants of the boards, there would be much more room for variation in the builds.
Sorry only Z170 GAMING model exception of the Z170I GAMING PC AC.