The above reply is correct, but I will elaborate some.
1, Right now no, in the next build out in a few days, yes.
2, Soon yes. As part of the world content updates.
3, Lesbian will be in, but will be only with named characters. There probably wont be any lesbian pub/prostitution sex.
4, Yes, it's already planned out. Currently though the focus is on world content as directed by Patreon votes.
5, Yes, Prostitution will be a major focus during the next release which will contain a lot more street and bed positions.
6, As part of the world content which I am working on now. Lake has already started to be expanded.