I was thinking about the fact that we now have "Demon" planets, "Sentient" planets, and many other kinds of planets. Most of the player made or extremely rare planets have decent artifact production but I would not expect to get the same artifacts from a "Demon" planet as those of a "Barren" planet. What creatures live on a "Demon" planet are probably very different from those that live on other types of planets and it only figures that their technology would be different. I suggest that artifacts could be linked to the types of planets that the player owns. The current list could be the standard but colonizing or creating certain types of planets could unlock new artifacts for shipment. "Dyson" planets could add some large special buildings while "Demon" planets could add a few new weapons on a demonic theme. Other planets could add other things. It would not re-vamp the system; it would merely give an added incentive to get some of these planet types. Furthermore, crappy planets such as the smaller "Gas" planets that used to be uncommon, could add decent things to the list to make people want to have one on their list despite the fact that it may be otherwise useless.

+1 would make the game bit different