Agrarian Idyll 12
Citizen Service 18
Corporate Dominion 20
Cutthroat Politics 10
Fanatic Purifiers 15 (-2)
Inward Perfection 29
Mechanist 32
Meritocracy 2
Mining Guilds 40 (+1)
Parliamentary System 15
Slaver Guilds 19
Syncretic Evolution 15
Been a while since I gave Mining Guilds a point, even if it isn't threatened it has earned it.
Removing from Fanatic Purifiers, for reasons I outlined back on page 5. It is getting wildly overrated as far as I am concerned. The bonuses are overstated and the drawbacks are greatly understated.
You can stack the "minuscule" mineral bonus to +55% (serviles, industrious, slavery, slavery guilds, fan authoritarian) at the start of the game which really lets you kickstart into the game. And if you do mineral/food only planets there is no extra micromanagement.
That seems highly questionable for at least one reason, and arguably more. Number one being that if you pick up Syncretic and Slaver Guilds, you aren't getting Mining Guilds, and if you're trying to optimise you really should have Mining Guilds. Another is that yes, you can do specialised planets, but if that's your recourse you're lowering the benefit of the civic and you're probably better off just grabbing Mining Guilds + Slaver Guilds. I'm also not at all convinced that that isn't what you should be doing anyway.
Personally I'd rather have Slaver Guilds for a few reasons. It doesn't split your growth, which isn't a colossal deal, but it is also more than nothing. Slaver Guilds is more flexible in that it can be changed if you would want to for whatever reason (you probably won't, but it's also more than nothing). Syncretic Evolution's bonuses are limited to the special pops, whereas Slaver Guilds will apply to any pop in your empire. If you're purging everything you conquer then this matters less, but if you're purging everything you conquer you're also slowing down your empire's growth which is a fairly significant drawback. If I was going to go for the style that comes with Syncretic Evolution of having two different kinds of pops, I'd rather go with Mechanist because even if the bonuses aren't as big the only drawback that still exists when going this route is that it is also a civic that can never be changed. On top of not having the same drawbacks, it has other solid benefits both in terms of growth and habitability. It doesn't generate AS much minerals per pop, but it is more than offset by the massively increased growth, as is the mineral investment required to get that increased growth.