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New character system, including Leaders, Admirals, Generals, Ambassadors, Governors, Agents and Scientists, all with defined skills and traits and the opportunity to advance and improve New modelling of borders and spheres of influence New expanded gameplay with race-specific events and victory conditions, as well as a new hidden faction! Expanded technology tree, including dedicated carriers, cutting lasers, rail guns, new planetary facilities and wonders Improved AI and an updated Diplomacy system with refuelling and mining rights as well as immigration policies Improved fleet management and automation, including fleet postures Improved modding support, including full race and character modding
Legends lacked the "big" headliner feature, but it was a massive improvement to the game. And that even if I dislike a couple of those features.