I think it needs a decent "mind":
-At least 1GB RAM
-At least 1.5GHz
-Preferably dual core
-Preferably A15 but new A9 acceptable
-At least 16GB NAND (fit all them distros)

It needs a decent "body":
-At least 32GB microSD expand
-At least Wifi-Mirroring but microHDMI welcome
-At least Wifi bgn (dual channel preferred)
-At least BT 3, 2MP ffc, 6gyro, agps (glonass preferred)
-Notification light
-Mic and dual loudspeaker on front
-Bezeless design, thin and light

One / Two hardware styles
Firstly a 5.1in slab with kickstand (9mm)
Secondly a 4.5in tilt (13mm)

And lastly it needs a pure "soul":
Operating System based on MeeGo 1.3, fully pure and open, no surprises