I will bump this every time Nintendo announces a new console, or mid generation. This checklist works because this Checklist covers Nintendo deficiencies. Also, it put things in a long range perspective. History is important, and sometimes opinions cane be fickle.
Higher Capacity disks- This wasn't a huge problem with Wii because 360 had the same size disks, and it wont be a problem with Wii-U because the disks are going to be a decent sized proprietary format. I also don't see Microsoft going Blu-Ray next gen or trying to top Nintendo in this regard because there is no need. One day I hope for a return to cartridges though, by the genration after Wii-U solid state cards will be enormous.

Backwards Compatability- So Wii-U is backward compatable with Wii and not GCN, well 86 million people have Wiis and if they really want to play GCN games, then they should't get rid of their Wiis.

A built in ethernet port. Decent online- Wii online sucked and was laggy, but Reggie says online will be good. The fanboy in me believes him. About the ethernet port, forget about that. This computer is connected via Wifi in this house, and so are 3 others a Wii and a DS and all at decent speeds.

A fucking Pokémon game thats crazy-I guess im not really as much of a fan of Pokémon as I thought. Or maybe I'm not the type of fan that Nintendo wants to please. I still can envision a Pokémon game thats better then the ones that are out, in fact with each new generation my vision of Pokémon draws from new games that are out, and control methods. The deficit has gone from Tiny to Enormous now. To the point where I've given up hope. I guess I just sort of expect some JRPG with minor tweaks to come out every 2 years instead of some innovative genre bending game.

3rd party support. Wii started off with lots of 3rd party love, but because the hardware deficiency ended up passing on that. Looks like Wii-U has a couple games
from 3rd parties, and mostly of the violent shooting type that I guess means a system is cool for the average joe. I always prefer games like Cubivore and Minecraft, but that's another story.

2nd party trust- I would say we're at 60% levels. Gone is SK and Rare, Retro is still awesome, but there needs to be more. 2nd parties are for filling genre gaps when Nintendo's hands are full. They are also meant to appease different regional preferences. Rare used to take care of this. They filled the Fighting and shooting genre and when a new Mario and Mario Kart wasnt out they made A quality clones. Monolith with Wii U sounds amazing even though i'm not an RPG fan.

Expand your Franchises!!! Wii expanded the franchise list with the Wii Sports brand, honestly as characterization it was lacking, but I still love to pop in Wii Sports even though its a 5 year old game. I love going to a friends house who just bought a Wii and totally fucking up their **** by getting a super high score in bowling that they can't beat. Who said scores didnt matter anymore? Honestly now a days I realize Nintendo doesn't make new game franchises because they just sort of do what they do and haters are gonna hate right? The real reason I want new franchises is because of exclusivity, which i don't care about as much because I'm not so much of a fanboy anymore that I wont just play it on another system. I still wish Nintendo would just buy Sega, this would single handedly take care of that problem.

First Party games more often.
You know the Wii actually satisfied this demand. In fact I have only two 3rd party games on Wii, both by capcom.

overall Wii-U is more Satisfying than Not.