Some of the following that I'd like to see would require multiple pre 3s.
1. how good the autofocus is on rear camera and photo comparison vs pre 2
2. spearker sound in comparison to the rest of the pre line, veer, and touchpad
3. how strong the slider mechanism is, wiggle it to mimic oreo
4. raw speed of pre 3vs overclocked pre-,+, and/or pre2 if available
5. boot and restart load times
6. charging on original touchstones - not whether it's possible (it's been said to work) but whether it is faster on the new ones. A review or feedback will do.
7. bluetooth pairing with headset and touchpad - if multiple pairings are possible. Just for kicks if it is possible, what happens when another bluetooth head set is paired with the touchpad also and a call comes in? Would you be able to give one of the headsets to someone else and do 3-way.
8. tts in detail, what needs to be setup on both devices in order for it to work and if transfer is one way only. Also if tts works from pre3 to pre3.
9. whether or not live.com sites like hotmail work.
10. whether or not multiple pre 3s can be had on the same account.