Maybe introducing constellation mechanics similar to the FW donation system in lowsec, allowing you to donate LP for corporations to upgrade constellations in low and hisec?
Making it so the upgrade tier of a particular faction of corporations in that area increases bonuses to payout & industry, allowing for passive economic warfare.
As an example, if you’re in Gallente space running Caldari missions in a backwater Gallente constellation, you can gain upgrade bonuses to Caldari npc stations in that constellation, with the possibility of negative modifiers for Gallente and Minmatar stations in that constellation at higher upgrade levels. Neutral faction stations would remain unaffected.