I agree with most of above except your claim about lack of app development. While it's true for commercial apps, - not much incentive to develop there and never was due to Elop's decision to kill the platform before N9 was even released - influx of ported and new open source apps seems quite strong.
I'm just playing with a new Stellarium port
http://thelarge.org/stellarium-n9/ (which is awesome) and few days ago I installed a new version of Rawcam
http://talk.maemo.org/showthread.php?t=85512 . Many apps that I use frequently - Meecast, Meegopas, Mapsi and CuteTube to name some - have been updated regularly.
The thing I really like about N9 is that I can use same CLI tools that I use on my desktop. If some CLI tool is missing it's not hard to fire up scratchbox, wget the sources and compile it for Harmattan. Not to mention ability to ssh into it and use like any other linux device on my network.
Real multitasking with background sockets is nice too. I can fire up terminal on N9, ssh to my server, attach to screen session of irssi and have it there for basically forever and switch to the terminal app whenever I feel like reading discussions. WP8 would just close the connection when I switch ssh client to the background. I don't know how Android handles multitasking, probably better.