about paranoid worriyng:
Meego was never meant (and won't be able for some years) to provide a correct portfolio for Nokia. The fact that this device is good or not cannot change the issue with Symbian, which is waaay more important for Nokia than maemo/meego is. So there won't be any rethinking of the strategy.
=> Nokia needs WP7, no matter how successfull the Meego device will be.

Nokia pays for WP7, and share WP7 with other manufacturers. It needs options to weight against Microsoft, otherwise it will cost them a lot more.
=> Nokia needs Meego, no matter how unsuccessfull the Meego device will be.

Just don't expect Meego neither to disapear, nor to become uber important in the next years or so. But I think this has already been discussed a lot.