The Draka are nasty, because
1. Enslave everybody
2. Torture people, etc.
3. Destroy societies
But it seems they're also *not* completely nasty, because they actually care about their serfs. They want their serfs to be happy to be serfs. It's a recurring theme in the books - they're looking for ways to modify serfs so that serfs like being serfs.
By the time of the Final Society, it's no longer horrible to be a serf. The serfs really like being serfs. They are not disatisfied with their lot. Even before then, serfs who are captured by the Alliance, generally prefer to go back to the Domination and being serfs... because being a serf is not so horrible that you would do anything to avoid it.
Compare 1984 for example - it really is horrible, without exception, and without any prospect of ever being happy with your situation, to be outer party or a prole.
So, what else is (books, etc.) or would be, worse than the Draka
1. Enslave everybody
2. Torture people, etc.
3. Destroy societies
But it seems they're also *not* completely nasty, because they actually care about their serfs. They want their serfs to be happy to be serfs. It's a recurring theme in the books - they're looking for ways to modify serfs so that serfs like being serfs.
By the time of the Final Society, it's no longer horrible to be a serf. The serfs really like being serfs. They are not disatisfied with their lot. Even before then, serfs who are captured by the Alliance, generally prefer to go back to the Domination and being serfs... because being a serf is not so horrible that you would do anything to avoid it.
Compare 1984 for example - it really is horrible, without exception, and without any prospect of ever being happy with your situation, to be outer party or a prole.
So, what else is (books, etc.) or would be, worse than the Draka