Life Seeding
One major topic in Sci-Fi are elder races sowing the genesis of those who would be their heirs like the ancients in stargate etc.

Soon you too will be able to seed planets with pre-sapient life.
Currently the feature is avaliable though the Dev version of the mod. Read though that mod's Change log to see how it works.

If popular enough I will look into making means to turn those presapients into primitive empires.

War Goals.
The Casus Bellies that your Celestial and Dimensional empires will get are.

Conquest: Nothing too fancy works as the default one
End Threat: Allows for the mortals to try to End the threat of your power. Is total war
Reclamation: Allows for Celestial and Dimensional empires to declare total war on default empires.
Heavens Quake: Allows for the War in Heaven war goal. When declared All of your subject empires will join in your conflict against your rival. Can only be declared on Awakened empires, Celestial Empires, Dimensional Empires, and adding in support for zeinth of the fallen empires Ascended empires and Ascended Hive minds.
Subjugation:Unlike normal empires Celestial and Dimensional empires will be able to use this Casus Balli on any default empire with the option of turning them into a fallen empire subject. for the singitories will have the added benifit of adding influence to you as though they are a protectoret.

Fixes:going to be working on varies fixes for technologies and ship parts.

Distant Dimensions: How these will work is in a similar fasion as the L-Cluster however that there are two dimensions the loop and a yet unnamed dimension for the enigmatics. There will be a special tech tree and events for these two realms that will allow the player access to them by building special gates to each. Normal empires will not be able to get into these realms without special bypass technologies but will still be unable to build the gates needed to reach them.

More than likely I will release the Life seeders, War goals, and fix together then fully work on the Distant Dimensions.