I’m beginning to think that at the end of the day, Agamben’s Homo Sacer series isn’t “about” sovereignty at all. If there’s a single core problem in this overlapping and yet heterogeneous collection of studies, it might be the threshold between the household and the political. Both Homo Sacer and State of Exception spend considerable time on that issue, though it’s rarely highlighted in discussions I’ve seen (or discussions I’ve participated in). In the first half of Stasis, it’s absolutely front and center.
The second half of Stasis deals primarily with political theology, through a reading of Hobbes — but in The Kingdom and the Glory (whose former place in the ordering Stasis is now taking), we learn (or kind of get hints?) that the root of the political theology problem is precisely the “economization” of the political, or in other words, the breakdown of the threshold between the household and the political. And — spoiler alert, sorry! — The Use of Bodies studies the place of the slave in the Greek household extensively.
I don’t want to sound more definitive than I am — obviously there is stuff that is hard to fit into this scheme. But I think that a reading of the Homo Sacer project from this starting point could at least be interesting and productive.