Hmmm - I got a bit bogged down in this thread. But unless I'm mistaken, the OP was asking those of us with a symbian (or similar) background what it was about that OS that attracted us, presumably in order to address the reality that if this project is to have a long and happy life it will need to address a lot of people saying "oh but it won't do X!"

Here's my list of things I'd want in a 'perfect device'.

Solid, quality camera: like the k750 had. (Yeah, I know - SE lost the plot with the c905!) The n95 (after the 1st firmware upgrade) had a more than decent camera

Basic office functions - calendar (preferably syncable... in a perfect world, syncable with groupwise!) calculator, documents reader (in a perfect world tv out and a powerpoint reader that includes the animations and transitions!) Preferably a pdf reader.

Music player taking all possible files, including DRM

E-reader programme, also compatible with DRM

Bible reader with search, verse finder and choice of translations (like the Olive Tree reader, for example)

A good card/solitaire game

Something for a shopping list (I currently use smart-shopper which is j2me)

A good app for following twitter - gravity is pretty good on symbian. Tweetdeck is awesome.

In a perfect world, a choice not only of facebook and myspace, but a range of other blog tools: I use LJ and Tumblr (be great to have a 'post to tumblr' option!)

Oh, yes: a phone and sms. I only send about 3 MMS a year, so I shan't weep for that. Email - and a good webbrowser (again from groupwise among other things).

Basics such as 3g, wlan etc.

A sound recorder (comes as standard with MMS phones so you can send a sound file - I have MMSed 'happy birthday' to people before now).

I truly have used a phone/pda as a torch (palm used to have an app for that which was handy!)

I'm honestly not sure quite how many of those maemo can or cannot do. Some seem to be a bit a lost cause.