Seconded.
Thier current rate is ~16% of cat_toxic will have some organics.
Changing the gen numbers to: 100, 20, 10, 5, 3 will bump that up to ~28%.
Changing the gen numbers to: 100, 30, 15, 9, 5 will bump that up to ~37%.
Changing the gen numbers to: 100, 40, 20, 15, 10 will bump that up to ~46%.
Also, duplicating the gen numbers for cat_toxic onto toxic_cold may be something to look at. Again, Titan...
Possibly also consider putting organics on icy and cryo worlds as there are several examples of that in the core, and it makes the use of a mantle bore for organics less of an edge case.