For your consumer uses perhaps
Sure if you need a socketed CPU
Ask around here, there are plenty of people who are totes fine w/ doing exactly that
Sure, but now your not a typical consumer, your a niche and an SFF overclocker is a niche of a niche
Actually its being targeted towards edge/branch use where there is a substantially lower expectation of forced air.
You know that sounds like, a solved engineering problem
But dont worry about it, you got choices
https://b2b.gigabyte.com/Server-Motherboard/MB10-DS3-rev-13#ov
http://www.supermicro.com/products/motherboard/xeon/d/x10sdv-tln4f.cfm
http://www.asrockrack.com/general/productdetail.asp?Model=D1541D4I-2L2T#Specifications
https://b2b.gigabyte.com/Server-Motherboard/MB10-DS4-rev-13#ov
https://b2b.gigabyte.com/Server-Motherboard/MB10-DS4-rev-13#ov
https://www.newegg.com/global/au/Product/Product.aspx?Item=N82E16813182964
The problem isnt Physics. the problem is most consumers think wifi is fine and vendors dont see it as a competitive offering at the cost to integrate it.
Mod Edit: Post edited to comply with community standards.