I don't think a New Ninty console next year with an x86 archi thingy is a good idea.
1. 3rd party support is not guaranteed
2. They will be playing catch-up with all the momentum in favor of the competition
3. They will be screwing over their loyal fanbase
They have to ride out the storm while attempting to build a stronger foundation for their next endeavor. i.e Build up their online, new ip's etc
Sony is in a good position with the ps4, they just need to keep up the good work
Microsoft should build up their first party strength to better compete against the ps4. A hardware design could do wonders