Though I personally think that they should put a QT version of Ovi Maps in vanilla Meego. Considering their biggest competitor is Android and nearly every Android device comes with Google Maps. If Nokia wants to combat Android they need other manufacturers to produce Meego devices. By providing Ovi Maps with vanilla Meego any manufacturer could then take that and sell their smartphone with GPS included. Especially if they want to get into the services and advertisement business like Google does and what Apple is getting more into.
The N900 is definitely the most desktop like device, if that's your definition of computing... but since Android now has Flash built-in to the browser and they also have java support (IIRC) - I think they have a slight edge on that now.