How about most planets will be barren/toxic/uninhabitable and you'd have to place biospheres, re-stabilize its magnetic force-field, and make transfer harmful materials?
Lets say you landed on a harmful planet but full of materials. Your AI suggests that the soil is ready for growing planets and rich in nutrients. You place a biosphere and create a magnetic forcefield that blocks solarflares from damaging the plants inside. After you see that the planets are growing giantly, you call your alliance to suggest terraforming this planet. The alliance agrees and starts funding materials so the pla