Apps:
HBOgo
Friend Chat/Chatroom (always active, slides out on wiipad)
Google+ Hangout/Party videochat
System:
Decreased menu load times
Achievement system
eShop:
Demos
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Marketing:
Nintendo, you have got to get more demos of mature, HD games working in demo units in stores or you'll never get the numbers you want on this system. I can't believe you didn't have an Aliens, ZombieU and Batman demo on all those systems out there from day 1. Are you positioning this as an HD console for mature gamers too or aren't you?
And never mind "mature" gamers. If you don't think seeing games like Mortal Kombat were the reason 10 year old kids like myself at the time petitioned our parents to buy a Genesis, then you don't understand the kid market.
Anyway, /rant...