I love Nacho and BrBa/BCS so much so first of all I'm happy to see you playing him... secondly, have you considered ximilia? It's a sci-fi, mission based game that fits a bunch of your requirements! Characters have a station outside of time as a home base, and are sent to different worlds collecting orbs to change a regret from their past.
Ximi is capped at 60 characters, character actions often have a direct impact on mission conclusions, many of the PCs are 25+ (waves in playing a 40-something), and depending on the mission sometimes the normies get powers or some other edge over powered characters.
If you are interested here's the game's main navigation, and also our latest TDM! Happy to answer any other questions you might have!
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Ximi is capped at 60 characters, character actions often have a direct impact on mission conclusions, many of the PCs are 25+ (waves in playing a 40-something), and depending on the mission sometimes the normies get powers or some other edge over powered characters.
If you are interested here's the game's main navigation, and also our latest TDM! Happy to answer any other questions you might have!