Since it's possible to download the best SNES games to Wii, it has already been toppled ('cause the Wii has additionally it's own library, Gamecube's library and huge catalogue of retro games in VC).

There will be a problem with WiiU, or even two problems. If it is similar to PS3/XBoX it will get some third party support for sure, but then it will have 1/100 of the game library of the other two as already existing games probably will not be ported. So, if you want an HD console, your very last option would be WiiU as you already would have tons of cheap "old" games for the other two. The second problem might happen if the WiiU is too different than the other two, then nobody will support it except for quick to develop minigames and it will be depending, again, on Nintendo's HD Marios. How to avoid these problems is hard to figure out. Might be if it becomes a quite powerful device, even able to compete with PCs. But then do not expect anything cheap, and Nintendo must be cheap to be Nintendo, cheap and way overpriced, that's the trick.

1) Ports of games for the Wii U would be a bad thing. So would remakes. If you missed out on the HD era then that's your fault, really. Why? Because a PS3 is only $250 nowadays and by the time the Wii U is out it will be even less. Above that Xbox 360s are around $100 used. $200 new. And if your getting a Wii U (which could cost up to $400 dollars easily from the looks of things), then you can definitely pay for a new/used PS3/Xbox 360 and get a few games you want.

2) How could the Wii U be drastically different from the competition? It looks like a funky PS3 controller but is very playable. _{According to people who went to E3 and got the chance to try it out.} I don't see where you stand.

It will have a smaller game library, since third parties are already all over Xbox and PlayStation. They won't have any problems with it being drastically different though. If they don't want to use the Wii U controller in their game, then there will probably be some other choice, something like the Wii classic controller.

People would forget or disregard all those negative comments and stuff, (possibly from people just feeling like it at the time)... so right now would be kind of sad (before it has even been released )

Positively, if the Wii U became the Best Console Ever, even interstellar and inter-dimensional beings would get in on the fun! ;D