Jesus Christ, I hope you're wrong or Nintendo his learned nothing.
Considering how much it changed for the 3DS (One universal friend code per system and not having to add a seperate code for every single online game) they learned something down the line. That was just one code per person and that was it.
Iwata answered a FC related question with this:
Iwata:
We’re not completely getting rid of Friend Codes, but a function of the “Miiverse” will simplify the process of making friends with another user in the platform by eliminating the need to input Friend Codes.^Source- 4th Question:
http://www.nintendo.co.jp/ir/en/library/events/120606qa/02.htmlI'm not completely sure what this means but they're changing something to that effect. With apparently 12 Accounts to a system, we'll have to see what happens in the coming months.