This was probably the reason Club Nintendo was axed. There's no word on how Nintendo Network IDs will be tied in. But I expect as usual for Nintendo it'll be terrible, and they'll accidentally discard all users digital librarys (that'd explain why they never did anything to the people that robbed their entire Club Nintendo digital catalog...).

News post:
http://www.siliconera.com/2015/03/17...wards-program/