Idea's for ANY smartphone that sounds good:

1) Mirroring effect is handy
2) Using the phone's gyro as a mouse.
3) Using the phone's touchscreen as a mouse-touchpad.
4) Water proof
5) Shock proof
6) Heat proof
7) Securely wiping the memory (present day iOS/Android have this)
8) Powerful vibrator, goes hand-in-hand with waterproofing (for ladies)
9) Case changing phone is cool. Like a matte style casing which can illuminate a bit of light and can be changed from the Settings... or IT ACTS LIKE A NOTIFICATION LED.

PS The OP was successful, sarcasm was achieved. Some people didn't seem receptive to it. Do they know they aren't obligated to respond? Or can take things lightly, and even contribute to the sarcasm?

Example/
I think a butt-scratcher attachment would be an ideal feature for the Neo900 or any smartphone to be honest. /s