My girlfriend has a Lumia and well... it seems to me most things from the list (still) apply.

But I have to agree with frostbyte, you don't buy a Lumia if you want a phone you can tinker with. It's just a dumbphone that works. And it does that well IMO. I also like the much criticised square-interface. It's practical and does what it needs to, while staying nice on the eyes (if you get the meaning, not that it's pretty, it doesn't stress the eyes)...

Biggest minuses for me are: 1) no mass storage mode; 2) no bluetooth data connection; 3) no other browser other than the built-in IE...

It's nothing like a N900. But as mainstream smartphones go, I'd prefer it over an Android or an iPhone at the moment.