That is true, you can't just kill everyone who agrees with you, because as soon as you start doing that, people will declare their agreement with you (if your suppression is succesful).
Supression is that "putting oppositionals into prision"/removing people from office.
That's why I ask for other things that do not use influence (like here research / buildings) and / or purge in some topics - everytime I only see, as my answer, silence, or "Respectfully Disagree". I want something special - gov unique action. Because now, everything is throw in one basket:
Re-education - Suppress faction
Psycho-terapy - Suppress faction
Medytation about philosophy - Suppress faction
And so on...
I suggest you read the '
Unity and Traditions' dev diary again about the Domination tech tree.
It not say a thing about supressing faction other than "
Domination: Focuses on maintaining control over your population and subjects", and whot give adopting / finishing it. So until there is no info about all "icons" and whot hide behind them, we can only speculate.
A simple 'purge everyone' button would be boring, as it would just negate all need to ever care about factions, which would be unbalanced and unrealistic. You still need your "secret" police.
Of course it will be boring - it is now boring (tested). Unbalanced and unrealistic? Maybe - but more like alien-like mentality.
Please explain how you got to that wierd idea.
Wierd? Let's see...
Paradox Logick:
Everyone end up with eight (more ore less) brain-damage factions, base on eight ethic, and no mater whot is your gov, and / or gov ethic. No one can escape from it, if (speculation) don't get Domination or Harmony tradition. No diversity (again!), no gov-unique decision. Nothin. Your gov is only +X to some stats.
My Logick:
Let's take my Tech-utopia ~ Colective + F. Materialist ~ in my concept, F. version is always on top, and type of factions is from them.
After a time, I colonize planet, do something, research something and ... pop-up - faction created. Click on it and I see... Biologist who wish I concentrate more on this topic, find a planet with alien fauna/ flora to study and / or give them grants. Next one show technician, who are interest in minerals / energy to study (maybe event to give them some or decision from faction menu), construction of safe settlement, and "material research". And so on, and so forth...
More example!
Spiritualist - If one god, then every faction is base on specific aspect of god. If many gods, then factions are base on them.
Militarist - By specific weapon, idea of war, expanding defence (build stations and / or research and expand ship hull by adding armor), and so on.
Gov-specific faction and ways to deal with them. That whot I want. So... Wierd, isn't it? Or, mabe not?