Yes, I second that! I want to use the new QT libs, preferably with MADDE (for which I haven't heard anything about latest months either...strange).

But besides that, my top annoyances are:
1. The buggy (or shall we say useless) BT implementation. Most handsfree and carkits fail with it.
2. During display dimming the sound becomes temporarily choppy. It irritates the hell out of me. How could that thing pass the (quality?) testing?

But still, I just LOVE my N900, it's the future right in my pocket.
Like someone said, it's not about touch-screen features or millions of apps, the N900 is about the OS and all the open community mentality that it brings.