http://plebegaming.wordpress.com/2014/07/24/bayonetta-and-devils-third-are-a-good-start/
Bayonetta and Devil's third are a good way to start reaching out to "mature" gamers. They offer your typical blood, guts, sex, drugs, and rock and roll you'd expect from PS or XB, and they're exclusives. I'm well aware they don't appeal to your typical Nintendo fans and likely won't go gangbusters in sales, but I think it's smart for Nintendo to reach out for more audiences.
If the few third party titles they get aren't likely to sell well anyway, then they should at least try to pull in a few from outside the Nintendo fold. At least that way their audiences don't overlap with their first party titles, potentially helping hardware sales more than another brightly colored, kids friendly, platformer game.
I think it's also a smart idea for Nintendo to try and salvage games like they did with Devil's Third. It allows them to pad out their lineup with games that may already have hype and could take less time to finish developing than a title starting from scratch. Are there more gritty titles that need to be salvaged though?