Just another major faction idea. I know they will not add more major faction but im just leaving this here.

This faction brings more than just a new story; game changing mechanics and more destructive weapons maybe even better ships. People from this faction are called Setra. They are better at fighting in land than space but this doesnt means they cant fight in space. People from Aurora are gifted with some powerful magic called Aura. İt is a dim light that moves around the body of the magic user and grants the user some powers. This faction has mastered the magic and the science with their unknown technology they are able to create magic infused weapons but this doesnt means they are way stronger than the others in space and thats why they prefer to fight on land. 

New weapons and ships:

This major factions is really advanced in technology but they prefer face to face fights with that here is some new weapons module ideas:

Protect at all cost: This module can be equipped in behemoth class and carrier class ships for the attack module, but it needs manpower to work so you better refill your ships before using this. for each weapon module this equipped half of the ships manpower starts to pilot little ships. (its like lets say the carrier have 3 attack module in total without better upgrades for each space diving module it uses %33 of the man power. lets say you have the better upgrade and now you have 5 module slots now each space diving module uses %20 of the manpower.) They do not attack but protect this little ships are equipped with dark matter barriers and overcharge ability. Overcharge ability is for the squadrons they use overcharge ability to overload the squadrons like an emp but this disables them for good and the dark matter barriers can protect the other ships from any attack missle or beam it doesnt matter. They are strong against little ships better use them agains floattilas but they are weak agains bigger ships as they hit harder. For each 200 manpower 1 little ships goes in the space. (This is not a faction only module everyone can open and use this.) (Needs titanium to be build.)

Energy Capture: This is a support module for new carrier class only. This module supports squadrons against overcharge ability and also gives % beam/missile damage protection to medium and little ships. Energy capture counters the overload ability and gives another chance to squadrons and as the squadrons are overloaded with energy they transfer this to other ships to use it. (Energy capture buffed ships can destroy dark matter shields.) (needs antimatter to be build.)

Dark Matter Cannons: This is a new carrier class and behemot class only attack module and very powerful solutions against floattilas. Not only it has a high damage but it also hits multiple targets. only %30/%20 percent of the ships damage hits the other ships orginal damaged ship takes %100 damage. (if the ship has 100 attack then the ship that gets hit loses 100 hp and the others lose 30/20), Reloads every phase and can only shot once in each phase. (needs quadrinix to build.) and can only equipped in 1 slot.

Magic İnfused Barriers: Provides protection agains both beam and missile damage and reflects % of the damage to the attacker. (Carrier class only needs Orichalcix to use.)

and there is some weaker versions of this modules if there is a edit option i will edit and add more things and more info about them. 

New Carrier Class (Vector): Same module slots with carrier but can equip some special modules. This ship is a tanky monster but has low attack ratio.

Story:İn their home planet there are only some scriptures that tells what happened in the past but that is not enough to understand the power they are holding.  Nobody knows how or when they got this powers or the source. Now they are searching for it, searching to find it and learn more about it, learn more about their past and their future. As they are travelling in the space they learn more about creatures that lives in their galaxy and they pity the ones that tries to attack them. They believe they can bring peace in their galaxy and in the universe but for that they need to find what they are searching for.

Ground battle tactics: This faction doesnt holds back anything, with their powers and their advanced technology they are ready to take on anything that attacks them on land, They are not only good at attacking but also good at defending.

catch and convince: (Aurora faction special battle groundtactic used in defending planets) This battle tactics provides health to defender but lowers the attack. % of the lost enemy manpower is captured and convinced to fight for you.

Fire Everything: increases manpower deployment limit, increases attack lowers the health. (aurora faction only can be used in both attacking and defending battles.) 

Magic İnfused barriers: İncreases defending troops health % (a lot), lowers the man deployment limit.

Population: (This is actually like horatio but different.) Your starting population (setra) gives you +dust bonus and they are called Yellow users (their aura color is yellow and the color of the dust ofcourse.) whenever you get a new population from aurora you have a change to get (green, red, brown, purple, blue, pink, white) colored aura users. and each grants different effects (they are same colored with the resourecs like blue is science  white is manpower and etc. With all of this they have one more trick in their sleeves. You are able to chance the populations bonus effect but be careful when you try this every Setra will transform and will grant the new effect you choose. (if you have 3 planets in a system and they have total of 10 setra all of them no matter what color they are they will change the color you choose if you need dust transform everyone in to yellow. But be careful spell flow takes a little time to happen. But you can also use this to your advantage you can make a system full of dust boosted people and other system full of science and you can transfer your population to other planets with time.

New system vacate option (Endless Dark): This is a last hope option while fighting against other factions. This action takes your building turn forever and each any turn destroys your system improvements but while this is active and your system gets attacked and captured it triggers a event called Endlees Dark that destroys any amount of improvements and people in the planets but also destroys % amount of the ships that were in the system.

More will be added i have some more ideas but i am thinking about them. Btw english is not my first language so there might be some spelling errors.