What I see in the game is there are 3 fractions but the devs made the choice for us to choose among two. Because we have Marauders - sounds like smth powerful and scaring, smth from Mad Max or Star Wars.
The second one is Syndicate - sounds like smth mysterious, connected with spies, smth from James Bond.
And the third fraction - yellow fanatics, I don`t even remember the name. What do we think when we hear “fanatic”? Smth crazy, smth from sect. Who wants to join the crazy sect on his own choice? As there is no any fraction specific feature in the game for each fraction - I think devs ruined the whole fraction by choosing the wrong description and name.
It should be more like Clirics for example, some military fraction that brings order and light with the sword. Player should be proud of its fraction and not be just…fanatic of light.
Otherwise, just name the fractions as per their colors. By the why also don`t know why marauders are not of red color.