BulkZerker :
Flashy colors, heatsinks on hot running components, better sound solutions, more connectivity, more expensive network solutions... Yea gaming boards sound like absolute shite yo.
To be honest, the more expensive network solutions are almost no difference, if any. More connectivity is debatable, since that is actually part of Z170 itself (not gaming), there is usually very little "gaming boards" exclusively have to offer on that front. Depends a lot more on the mobo form factor (ATX vs mATX)
The Heatskinks are quite good for extreme overlclokers with extreme voltages, but that has no real value in gaming.
For gaming, we already know that CPU performance is secondary (it's more than enough with any 4.5GHz new i7, or even i5 most of the times). Even a locked i7-7700 would be enough probably. Getting your chip higher (5.0GHz 7770k?) depends mainly on the chip itself and then on the MOBO stability, but even then, it would require extreme voltages and constant stress testing to worry about overheating MOBO parts (always talking about Intel, not mentioning AMD).
The only part I will agree is the good sound solution. But it's all about economics, and in that fron it actually makes sense to charge extra for more expensive mobos. I'm just saying that they offer virtually no benefits for gamers specifically (apart from the sound).