The first commers,judging by the historical experience we had in north America since the 16th century,will most probably be *adventurers*.Because self-determination will constitute for us nothing less than an adventure,not only in the beginning but on a permanent basis.That`s the advantage of so to speak moderate national political ambitions over extravagant universalists ones.People never tire of national ambitions,whereas they eventually end up having their fill with such internationalists ones like marxism.Once separatism will have become a common trend of political thought among gays,integrationists will have little time left to make a reality of their dreams.History will not grant them millenia or even centuries for that matter.
In our days, we already encounter large-scale gay migration from rural areas to few megapolices with outstanding gay culture. Cities like New York, San Francisco, London, Berlin, Cologne and Barcelona (and a couple more) acquire large part of their citizens not by the means of reproduction, but "immigration" from smaller towns and villages. I see no reason why the same mechanism should not work with the gay city-state, provided this state offers its citizens jobs, basic comforts and is of at least, let's say 100.000 inhabitants. The very begionning would be, of course, a very adventure and, in certain respects, a "say-good-by-to-civilization". A gay city of 500.000 inhabitants and a medium standart of live would exercise a tremendous draw to the gay population, from the simple reason that the ways to experience one's identity would raise from the level of close neighbourhood to the state level - with
many gay tv-channels,
many gay bookstores and
many gay films to choose from when you go the cinema.
In a politically independent gay civilisation without family structures or lineages,the proper heir of everything,including litterary productions,should be the State.Individuals,however,will not necessarily trust State agencies,even if they are gay.And other social structures will anyway replace the family and allow for the normal transmission by way of wills.The individual will still have the possibility of transmitting inheritance to individuals of his choice,only that these individuals won`t be relatives.Family names,however,won`t serve any purpose and could eventually be abolished.They could be replaced in official documents - like identity cards - by the "vintage year" of the individual,that is his year of birth.Instead of rivalvy in reference to dynasty as in heterosexual society,individuals would boast about their respective generationd and their accomplishments.
1) The ballance between private and common interests will yet have to be found. I think the state has no right to disown individuals post-mortem, though I give you right that from my private point of view the community would be the proper heir of a gay man. This would probably depend on the way the individuals choose for them to be appropriate - either by marriage, polyandry or single living. In the case of intellectual property the person should of course profit materially from his/her work, but as late as with the death of the author the rights shall fall to the community. We must of course contemplate that we live not isolated from the rest of the world, and that other legislations might conflict with the local laws of the gay state.
2) You and your social engineering!

Probably you would enjoy the novell
"Jennifer Government" by Max Barry, where individuals are supposed to have the name of their employer as their surnames (State employees are therefore XY Government).

I do not dare to mention "Seven of Nine" frm the space ship "Voyager".
A scenario which I think to be not
entirely surreal is that people could assume clan names, should clan system ever become a common phenomenon in the gay state. I hope these will be not the clans of the Japanse Yakuza style, but rather a sort of Kibbutz's with life-long family bonds. We should think about social models which would enable both individual freedoms and rich societal life, free of social isolation and nepotism. It might prove to be necessary for immigrants to participate in "naturalization programs" where they would learn the country language and political structure of the state, as well as improve their knowledges in gay history.