Great post, based on solid arguments, thanks!!

Exactly what I am worried about is the drivers and close applications support for the N900. Ovi Maps is an example of one technology that Nokia is betting on and is set to be completed (turn-by-turn navigation) on Harmattan only. Even if Meego base OS source is completely open every device maker will have customizations and applications to differentiate itself from competitors.

From my point of view Nokia is marketing N900 as a pocket computer but supporting it like a standard phone. Computer users expect it to be upgradable with supplier support, and those who bought it as a mobile expect at least the same level of features Symbian has now (Ovi Maps, Ovi Suite and a lot of other simple phone features that seems "crude" now)