Similar to the CT Lab in operation but a few tweeks.
This would be a base module that would allow players to build artifacts using any of their resources (special, regular, credits, artifacts, badges, energy)
It would be approximately the same size and cost of a CT Lab but unlike the CT lab which unlocks stuff depending on researching attempts the only way to use it would be to find schematics, or blueprints.

Schematics would be dropped from NPC's at a very VERY low chance and only from NPC's that drop that artifact. For instance you would only find crimson obelisk schematics from crimson hawks. As soon as a player finds these schematics the EaA lab would be updated with the new artifact. Before it can be freely constructed by players however you must understand how it is built. This would take a collective effort of research, resources, artifacts and time.

In this example it would be something like
Crimson Obelisk blueprints ---- Can't build
Requirements --
research 100,000
Darrinyte 50,000
Pawlacite 5,000
Kurenite 500 (total cost of all 3 of these is around 1 billion credits)
Reverse engineering estimated time 48 hours (this timer starts when all the resources above have been acquired; This value changes depending on the artifact in question)
During the reverse engineering time players can donate their own crimson obelisks to speed up the reverse engineering time by a %, probably 1-5%. Doing it as a % value means it will always take SOME amount of time to do this, no instant gets.

Once engineered in full it would appear like this
Crimson Obelisk ---
20 Darrinyte
1 Pawlacite (estimated cost about 62,000)
Build time 30 minutes

Schematics would be non-tradable and would apply to the legion you are joined to when it was acquired. A player who found a schematic who leaves their legion for another one will not bring the schematic with them.
In addition the EaA Lab would only start with 5 work stations. Similar to the base as a whole it needs to be upgraded to gain more space. A work station is a place where players would be building artifacts. In otherwords only 5 players could build artifacts at one time with a new EaA Lab.
The build time and work station restrictions would prevent players from buying artifacts in bulk and messing up the system.

Work station upgrades would start with a 250 energy requirement, a 25 tech parts requirement, an a 50 XTS-9 requirement (constant)
These values would multiply by 2x for each level
500/50 for 7 work stations
1k/100 for 8 work stations
2k/200 for 9 work stations
4k/400 for 10 work stations
8k/800 for 11 work stations
16k/1.6k for 12 work stations ect

Trade treaties would allow for legions to share schematics with other legions, it would only last as long as the treaty stayed in effect. As soon as its dropped legions lose any new schematics they had. If a trade treaty is in effect and a player finds a schematic of one of the techs gained by the treaty they gain it as an artifact which can be found under the Use base artifact button and can only be activated once the treaty has been broken.

When setting these treaties they are sent as requests listing what artifacts the legions would want to share. If a legion doesnt feel like sharing one of their better techs, say something more rare like grid consoles they could keep the request blank or use another artifact. Legions could also choose to share all their artifact plans.
If a situation like above occurs and the legion would like to add the new schematic to their own collection all they would have to do is cancel the trade treaty, use the artifact and send another trade treaty.

+1 I love this idea! but would there be restrictions? like can I do reverse engineer a terraforming device?

I don't see why not. The balance of such an idea of course is the important part here. My guess due to the rarity and demand for such an artifact that reverse engineering would take weeks maybe even months and cost TONS of resources. Even when producing it if you managed to reverse engineer it it would cost billions in resources and probably take a good number of days or a week or two to produce.

Even with that there would probably only be 1 NPC that would even drop its schematic and it would probably be a boss or elite.

I like that plan, a flat 48 hours for any artifact is kind of unbalanced, but if you make it take that much longer I'm all for no restrictions!

I didn't mark it as a flat rate but I edited it so that people will know it scales. With such long build times as well even if you have 10 or 12 workstations they would shut down your production for quite a long time.

I could see planet structures taking a good 12-24 hours to build if that puts more things in perspective.
I would also see things like brackets and charge cells taking 24-72 hours to build.

I think this is a good Idea. Especially with all its fail-safes.

I totally approve of it now, just wanted to clear up what you meant