This thread is about Totalitarianism in general, so I would like to ask: What would be the advantages of maintaining an unlimited absolute autocracy such as the one in the Russian Empire? I have tried to do so in Vic Rev for the Russian Empire, but the only thing I get is are endless revolts, no matter how low are taxes, how much goods the pop gets (in general, no matter how "good" the country is).
Unlimited autocracy would be your preferred mode of government if you don't want elections and political reforms, don't have a fascist party that could do the job, and don't want to go through the upheaval of installing a communist dictatorship.
My idea would be that autocracy, much like presidential or liberal-bourgeois dictatorship, would only have access to a few of the "evil" totalitarian techs that keep plurality and militancy and consciousness down... secret police yes, one-party state yes, modern propaganda no, mass mobilization no, rule of terror no.
Depending on how easy it will be to make a profit, autocracy could be a cheap way maintain political stability if you have an anemic economy. Lots of clergy = low consciousness, lots of low-CON conservatives and reactionaries = little demand for expensive social reforms. However if you want to industrialize and modernize then autocracy would (should) be a suboptimal choice, those tasks should be easier with a (totalitarian) fascist or communist dictatorship in place since have other means than clergy to keep down CON and MIL.