Hello,
I was doing some scenarios and I just though about a little tips to have extra justice points at WoD release.
Basically, what you have to do is go to the justice cap (4000 pts) and farm scenarios (normal ones work too) for the Greater Cache of Treasures.
Why ? Because it has a 100% chance to contain 60 justice points, and you can keep those caches in your bank, untill WoD release.
I don't know if justice points are going to be really usefull once 100, but it will always be an extra piece of gear or something, so it's worth taking it.
Hope some people won't have thought about this and that it'll be helpful
tl;dr: Keep your Greater Cache of Treasures from scenarios, they contain 60 justice points.
PS : It's half a repost since a lot of people already made posts about the justice points in the Greater Cache of Treasures, but I think it's good to remind people about this for a WoD "early start".