What was the point of him taking Phi to some ruins on the outskirts of town just to use his appraisal skill that he already used? Like he couldn't have just gone to an empty room of his house and closed the door? And how'd the Saintess find out about him so fast? It's been like a few hours.
1. If the planet they found was inhospitable, then is was not suitable by definition.
2. If they had the technology to teraform a planet, just fix the original damn planet!