As far as i see Nintendo lately:

N64 - Failed because of cartridges and it was very expensive to make/buy. Not alot of support from 3rd party developers who all went to Sony.

Gameboy - Low powered kiddy looking handheld consoles that don't have good games tbh.

GC - Failed, no online or 3rd party support, had the same games over and over again.

DS - Gimmick touch screen that no game really makes use of. The games all seem very poor to me and the handheld looked poor until the lite. I havn't seen anyone with one in the UK personally so dunno why other countries seem to like em soo much.

Wii - I think this consoles controls and lack of power will make 3rd part developers stick to the PS3 and 360 because they're easier to develop for. I think Nintendo will have delivered a flop again like the GC and will only have nintendo game support. The controller will turn into a gimmick like the DS touch screen and only Nintendo fanbois will buy. I find it impossible to see this as a success.

It'll just become the console to play all your classic Nintendo games on.

That said though i think all the next gen consoles look pretty ****

Slannmage