Negative Leader Traits Mod adds a negative version of most leader traits (not rulers) in the game.
Gameplay Improvements Mod is improving the gameplay to make the game feel more enjoyable and less clunky.
Alpha Aliens Galactic Ambitions is an overhaul of Stellaris with the intention of making the gaming experience last longer and feel more involved.
This gorgeous mod will save you from a lot of unnecessary clicks. Now the building will improve automatically if sufficient resources.
The AI makes or breaks this game. There are a lot of concerns about the AI and this mod aims to address them.