I know you are having a goof but in all seriousness if there were to be a CG to gather this stuff collectively so that Guardian tech could cost credits only for a week or two for all players who are interested. Sort of like what they did for Cutter and Corvettes. Eliminate the Grind and make a short period of time where it is (relatively) free for all.
Please no.
This "Personal narrative" (which is a good idea poorly implemented) exists BECAUSE people found CG's being used as "Narrative devices" (even though narrative seems to mean, new weapons... to FD somehow) was getting really, really tiresome.
Please, do no go back to using CG's to move every single tiny fragment of your "narrative"
Just design more content like the guardian ruins, but have it as a single "Level" and don't worry about it "only being used once" these sites still have things that are nice to have. The items for synthesis for instance. You could also make the items there worth a decent chunk of credits as well.
If for each guardian technology, there was a different guardian based puzzle (Some could be by flying through and scanning derelict guardian ships in space, others could be in underground ruins, etc) and completing said puzzle gave you the weapon unlock (not doing the same puzzle 48 times) then people would be showering praise all over this.
Please... no more "Narrative" CGs...