First, I'd like to say that one of the reasons I went with the N900 was because I thought it would be similar to the Android OS. Admittedly, I am not savvy with using terminals and I am spoiled by the App Store and the Andriod Market place.
Here is my "gripe". I want a dictionary "app". Have tried Qstar several times and no love. I want to send MMS? The whole fMMS/fAPN route should be simplified for the end users like me. Is that too much to ask? Also, I know there was a way to shift the "conversations in SMS so that it appeared on different sides of the screen? I don't think it ever left Extras-devl? I toyed with that once and had to re-flash. it was a sad sad day and I have learned my lesson.