Regardless of my love for Nintendo games, I don't think I would go for this. I like having hard copies of games, especially Nintendo games because the replay value is so high.
Plus, I don't think Nintendo would go for this. Its games sell for full price long after launch, so the company would have to charge a huge fee for unlimited access to all titles.
I agree, but this is more of a last ditch effort on their part. If the Wii U continues to sell the way it is and doesn't pick up (like the 3ds does), and if this is a precursor to future Nintendo home consoles selling poorly, then they may consider this. I would imagine a ton of people would be willing to own a wii u under this condition as a secondary console because the annual cost would be consistent and not be based on epic software releases.