...having to say that, besides a HWKB (4.3'' is bit smallish for Hacker's KB etc.), UMS, and the better multi-tasking, there is almost nothing i miss from my N900. Instead, i'm able to do things much more comfortable and faster than before - either because not having to wait for slow HW, or because things are more seamless now respectively 'just' working entirely in the background now.
Won't look back, (but understand people who may do so); having found almost all my (better) alternatives by now.