doesnt look too bad. almost everything looks iphonish to me but thats just my opinion. plus i prefer onscreen keyboard to a physical one. again thats just my opinion.
A successor would have a full QWERTZ!
A successor would have 1024 x 480 pixel resolution
A successor would have at least 1,5 Ghz
A sussessor would have Flash 10.1 on it
Then it's a dream come true for a happy N900 user.