What I expect from the N900 is not much...
I want to be able to make basic phone/voip calls with my carrier, skype, and voipbuster.
I expect the speakers are an equivalent of the N95 8GBs, those are really good.
The headphone volume shouldn't be as quiet as recent Nokia devices (N95 8GB's was pretty bad with some headphones)
An Internet radio app that plays AAC+ streams with no problems (Can't do that currently)
Toy value: I want to prod around the system to have something to do
And all this with a battery that last at least one day!
...I don't want much, do I?