The fate of the Empty Crown after the events of the Exomorph crisis are unknown; they may have been decimated or their organization may still exist within the Romulan Star Empire. However, Kleeya has revealed rumours to the attention of starfleet that a master key has been built, allowing control of exomorphs without the need for a control facility.
Idea: Maybe place one lantern on the left side and the next on the right side & then on the left side again and so on. It may look better than having all lanterns on the left side just like that.
It's up to you.