Why?

• Because calcite needs to be imported from Vulcanus or space platforms, and that's a bottleneck if you want to megabase

• Because eventually (maybe) I'll have a chain of mods that let me grow fruit-in-greenhouses on any planet (at substantial energy cost/with lower efficiency than agri towers) so you can have full 'local' production on Aquilo in the very late game.

• Because Gleba is the best planet.