Ok - that would be a shame.
This is a really nice mod! I am playing through for the 3rd time. Island Maps are nice as there is a limit and one will need to switch to space delivery.
Would there be a chance to maybe change the exotic rock recipe, so that there is something like a 0.001% chance for an alien seed?
Given that it comes from asteroids, it might make sense to the story as well.
I know that it might undermine Your intention to have the player explore the map - but could be a fix for island maps without cheating.