I'm currently playing Endless Space 2. It's not just good, it's for most part a work of beauty. It scratches all the 4X autism itches (maybe the combat could have been more fleshed out), the visuals are, just like it is the case with Endless Legend, pure eye candy, the lore is very interesting and enough to get you invested, and the soundtrack is such a blessing for both the ears and the soul. I'm currently maining as the Vaulters as I grew quite fond of them back in Endless Legend. While a close second is the
Imperium of Man United Empire, every single faction is quirky, interesting and likable on their own. And personally I think that every single faction intro is hype as fuck.