What I like the most about TTL's Drakians is that
they don't seek the enslavement of the human race.
IMO Stirling's Draka was the generic traits of an
Evil Empire taken to the extreme, with their ideology simplified to an extent that all Naldoressen was saying was
- Draka = good master race
- Everyone else = ferals
Even Hitler didn't take National Socialism to that extreme; his racial ideology justified an entire sub-racial tree inside the category of "Aryan". Stirling took the basic concepts of Nazism, simplified them, and amplified the result to a ludicrous extreme.
What EBR's Drakia has done is essentially create a more insidious evil; with a more complex creed comparable to the Protestant Alt-Right/White Supremacy, Drakia has gained the ability to essentially annex large amounts of land without having to enslave every native. For instance, take the Princely States of Spain and Rhomenia; with Societism favoring the White Race, the Drakians were able to simply radicalize the Rhomenian populace into believing that they were the "Master Race".
This isn't Vanilla Draka, where everyone considered it better to detonate fusion bombs on their own soil to prevent being enslaved, this is an ideology more akin to Fascism, or Communism; one that can easily be spread into a conquered nation, turning neighbor against neighbor until there is no such thing as German or French- only Drakian. Societism, unlike Vanilla Draka, can be
exported, transferred to other nations, becoming a creed that rebels can rally around and fight for. Stirling's Draka never had that; their Drakan supremacy ideology already ruined any chance of radicalization and sympathy.
The most terrifying thing about Societism isn't its cliched creed about enslaving everyone on the planet; it's the fact that even under Drakian rule, one can still live his daily life unhampered by any restrictions. Societism can become the new normal for them, where they can consider the Empire as a society equal to if not better than America or China.
And after decades of normalization under the jackboot, perhaps they really will consider themselves Drakian rather than Rhomenian.