I really like the imagery behind the Phoenix name. From destruction rises anew.
this could turn out useful in terms of marketing strategy. the device is unbrickable and in general very stable and reliable. no matter how hard you try, the pandora will stand strong. concerning the original pandora there were times many of us believed the project failed due to unforseen complications. but in the end we made it. this also shows the dedication of the few ppl in charge and the unbroken support of the community behind it.
this kind of behavior or quality reminds me of a toy my son is using a lot: a weeble.
http://en.m.wikipedia.org/wiki/Weeble
the weeble embodies this quality.
this comes to mind, obviously:
weeblux (no google hits so far)
weeblix (often used as a username)
"weeble" is a trademark. there might be restrictions.
as a clamshell the pandora truely has the shape of a box. i guess the same goes for a possible pandora 2.
weebox could work.
just like the "wii" these suggestions imply a more child like userbase, which probably doesnt fit our case.
a couple of years ago i had a sidekick handheld. i totally loved the name. maybe something in that direction could work as well.
personally id avoid any dragon/fantasy reference.