At that point, Thom, one just declares Soc a as Non-gentry, and soc A as gentry...
It's canonical that to even function as an attorney in Imperial Courts requires Soc A.
The Warrant of Restoration is cited in GT sources as well, and mirrors the lack of distinction between citizen and subject, but unlike the original T4 version, doesn't make the alien (foreigner) a citizen, too.
The following always uses alien for non-subject, not for non-human.
The current majority of nations have 5 tiers alread, in declining order
- Government Agents
- Full Citizens
- Resident aliens
- Non-resident aliens
- Unauthorized aliens
Most have had at least three more tiers which have gone away, from the following:
- Royals
- Nobles (can be either side of government agents)
- Subjects (can be either side of resident aliens)
- Serfs & Peons (Below Subjects; really a subclass of Subjects, but often below authorized aliens)
- Slaves (Usually above Unauthorized aliens)
- Criminals (Usually above Unauthorized aliens, but not always.)
The modern ideal of "One class of citizen" and "One almost identical class of non-citizen" does not actually exist in practice anywhere. The few with equality under the law still give distinctions under the law to agents of the government on duty and still have a bunch of crimes that are evidence of the "unauthorized entrant" class - an alien is a different class practically, in that they can be expelled for very different things (including minor ones) that citizens cannot be.
Cleon's "Every sophont is a Citizen" makes every alien, human or otherwise, subject to the laws...
and expected to know them. And any violation of them is equally punishable as a simple criminal case. No separate status for Zhodani spies. No separate status for Ihaiti. No separate status for the Duke. (Marc has said recently that the 3I Nobles hold no separate rights for being Nobles, but those in specific offices {including fiefholders} have additional rights and duties
by office. Only the Emperor has by 3I law in the classic era separate rights by heritable title instead of office.)