Profile

Universes

Terraforming - Reverse Direction Options

Corruption System

Emoticons (game related) for Lobby and Forum

System/Star based Curiosities/anomalies

Mods should not disable achievements.

Better Customization Options

Make Academy spawn an isolated system (no links)

Interbreeding

Ground Builder

Population Management Menu

space monsters to fight and maybe tame

show shot down missiles in advanced battle debriefing section