Ineffable insignia and inscriptions are used to craft leveling equipment with selectable stats.
They are pretty pointless since they are so expensive to craft, leveling is so fast, and content is so easy at low levels that whatever you craft with them is a soon outdated waste of resources.
It's one of these weird things players wonder why were they added at all since it's pretty much pointless.
We'll have to get Alliances to see the actual changes on our side. All the top players will try to gather into a single alliance.
The system will have to deal with that.
For now, all I can say is that there were no more weird bugs like ending up in another match or world.