thank you 

Thanks Im tweaking the bonuses planets get the levels they get them and the max bonus list so that each planet is a little different. I redid the entier colonization process so that things like atmospheric, gravitational, magnetic or meteorites always pop on scan, surface conditions always pop on colonize, deposits, rare resources subterranean caverns and the like appear on first explore and anything artificial appears on 2nd explore. Im also upping the max bonus count on each planet to 4 for some varied and unique planets. 

theres a field in the entity file requiredPlanetBonusesCount x its usually set to 2 Im turning it up. 

You want to increase the artifact research level in the planet entity file. Then give appropriate increases to artifacts or bonuses you want available at that level.

Edit - I should also point out if you want the more random bonuses in a map you'll need to set the bonus density higher in the *.galaxy files.