Guild Wars 2

All the things are account bound so you can do it on multiple characters. I think i used at least 4 different ones. And the final backpiece is also account bound since it is ascended so you can move it to whichever character you want it on.

They have mentioned several times that they are calling the new trait lines reward tracks. So when they say elite specialization reward track, they mean the line that you unlock in the hero panel in order to use the elite specialization.
They said during the 4 hour ready up last week that these new tracks have rewards in them other than just skills/traits, for example the new weapon and shoulder skins that you mentioned.

I have had 1 glove box drop a week ago and 2 boot boxes in the last two days.