AllBout Jolla & N9: How would you improve Nokia N9's hardware design?

It's been over a year since the public release of Nokia N9 and still: The hardware design is an eye-catcher. But not only the look counts. Factors like usability, quality & durability become very important in long-term use. Even the most careful owner probably spots traces of usage on his phone by now. Our question is:

How would you redesign the Nokia N9?

What do you think did Nokia well with the hardware design? What flaws does it have? What should Jolla's upcoming device, the unofficial successor to N9, do better? What are you very happy with? What frustrated with? You're welcome to share your ideas, opinions & experiences in our comment section. We would love to share the best answers and most common ones in a future article.

To give you something to start think of, we have listed 10 different categories. A feather light, bullet-proof, super thin with large camera-sensor equipped phone could be an appreciated gadget for some out there - but for now, let's appreciate an as-realistic-as-possible feedback. If you have pictures to share, please share them with us on Twitter or Facebook.

Thank you in advance for any contributions.

1. Polycarbonate case, incl. buttons and camera section

Form, feel & look, durability, scratch-resistance, material, openings (e.g build-up of dirt), uni-body or possibility to open case?

2. Display, "scratch-resistant" Gorilla glass

Fragility, scratch resistance, mirroring, form (rounded edges)

3. SIM-card tray, USB connector & door

Exposed or covered USB port? Missing HDMI port etc? Missing microSD-slot?

4. Speakers & microphones

Call/sound quality, inbuilt hands-free speakers working well?

5. Camera (front & back), LED flashlight

Should there be a better front camera? Is LED flashlight strong enough?

6. Arrangement and availability of components