I kind of need to defend Kirby here. So yeah, Kirby games do come out quite often, but thats because they make money and have a pretty big fanbase. The upcoming rainbow curse looks okay and tripple deluxe sold well. I don't think that Kirby games are crappy, I do think that the ideas they have some times for Kirby are kind... lame.
Honestly tho, Nintendo has plenty of oppertunity with the Wii U to expand their library of IP's. Hell they could even dig deep and ressurect and reimagine some of their old IP's like we're seeing with Yoshi. Imagine a Kid Icarus game that's in fullHD(1080/60) with OPTIONAL gamepad controls and online vs. mode. That game would be fresh and unique for Nintendo on a home console.
I still believe that Nintendo should expand their library of titles for the Wii U while still maintaining most of their old IPs. I would totally be okay with 3D World being the 3D Mario game for this generation if it means I get Metroid, Kirby, Yoshi, Donkey Kong, Smash, 101, Bayonetta, etc. Point is, Nintendo doesn't need to skip a generation for any of its beloved IP's OR choose to produce new IP's as long as they limit the number each IP gets per generation to one.
Besides, it wouldn't be exactly fair for any of Nintendo's beloved IP's to go off into that sweet night without any fanfare. Just sayin :)