I would like a built-in AntiVirus/Firewall, it doesn't have to be robust, but since Microsoft operating systems are attacked (for ages) by viruses and trojans, I'm sure they have a great experience regarding those, and the ability to avoid or eliminate them
and I wish (this would never happen) they introduce an operating system without announcing few weeks later that there are few (KB) fixes for some security risks.
and i wish (auto update) would disappear! (i always turn it off)