Factions having an influence on their development is a two-way street. I am saying this a long time leader of a faction that has significantly influenced its course in the mod. The ALG player faction came to write their own story to such a degree not because the devs just loved us so much that they give us interesting plots all the time, but because I proactively approached them and worked with them to make what I wanted to do with the faction a reality, and ensure that it fit within the wider story.
Some factions have gotten effectively zero development since vanilla, which sure, is in part the fault of the devs not bothering with those factions, but also the fault of faction players who simply didn't care to approach them about developments they may want.
You can disregard the above if you did approach devs with ideas about your faction and they were like "no fuk u" but you do have to make an active effort, as a faction leader. It's not going to come to you automatically.