Needs to be updated to 1.4.1

needs an update please

One possible alternative would be to take a look at the "The Belt" mod and see how they did things. Instead of raising habitability overall, "The Belt" allows you to build a tile improvement that adds a huge whack of Habitability to the specific planet it's on. In that mod, the "Life Support Systems" make the habitability of an asteroid go up from 20% to 80%.

Of course, (most) planets have far more tiles than an asteroid in The Belt, but on the other hand, there's generally more you wish to do with a planet than with an asteroid.

Awesome picture ! We definitely need to add sentient Water Bears to the game ! LOL !

I actually wanted to do juat that, make each climate tech simply increase its OWN habitability. However, due to the limitations of the Stellaris modding engine, that kind of "Fine Tuning" just isn't possible. (at least not that I can see). Maybe it will be doable in the future.

Hi ! Cool train of thoughts.

And about colonization techs - what about making insted each one give +30/35 habitability on its own climate rather than a whole +5 everywhere ? (So that's more a "tuning the biodomes for a specific climate" stuff)
Someone could argue that sealed environments should cost more minerals and time to build, though...