Vale has a class G5 Yellow star, which represents the “Imminent Gold” in the Glory and Gold descriptors used by the Triglavians. As there are files for yellow stars to be turned, it’s very likely that Vale, which is currently invaded, can be pushed in to the Collective. If you’re currently in Promised Land or Samanuni, don’t waste your time there as their stars are incompatible.
Go, triangles! Do what the State has failed to do for so long and capture Federation space for good!