Gene mod 1 pop at a time on a Gaia world and after 8 times, you can colonize any world at max habitability.
That is a very good idea actually. Wish Gaia or comparable was not quite as rare as it is.
I think the whole point is that you're supposed to grow gene modded populations normally.
But that has two problems:
1. We would need a way to "single out" a specific pop for the modification. No point making the whole planet incormfortable just to get one colonist (wich we will return to normal afterwards anyway).
2. Terraforming is alredy that lategame approach. Wich leaves Gene Modding in the "colonise now, to adapt the species later" territory.
If anything I think they wanted to
prevent it being used exactly this way.
Seriously guys how slow do you colonize if there is anything left to colonize at the point you can gene modify your race. Usually at that point you colonized everything within your border range either with conquered xenos/primitives or robots.
Droids are not effective colonists before Synths, as a explained in detail above. So not an option.
And you might not have the proper species around that has acceptable Traits. And whose government has migration friendly Ethos. And then there is the problem that the others side might not have planets for your pops either. Or you might be Xenophobe all along (GE modded primary species has much less penalty then fully alien species).
One Idea I have been mulling about for a while is what I call "Trait Templates". Basically Genemodding would be a two step process:
Step 1. Create the Genetic/Trait Template.
Step 2. Apply Genetic/Trait template to a lof of pops.
Optional Step 3: Allow your scientists to extract another species traits into a Template. Including the ones that Automodded themself via Environmental Adaptation.
Step 1 would allow to include negative traits or even upgrade positive ones. While it can be priced to make it prohibitively expensive early game.
Step 2 could then scale with the game size.