I like the idea of putting buildings into lines, and have a few ideas I would like to share:
Elders council --> School of scribes --> Printer
I think these buildings have a similar purpose: Preserving knowledge. Also their bonuses are fitting.
An other line I think would be reasonable:
Fire pit --> Storytellers circle --> Any temple
I feel these buildings similar in that they are places of social gatherings and fulfil emotional-spiritual needs.
I would make Fire pit cheaper, and make it free after some tech, and give it +1
I think the early buildings shouldn't go obsolate this way, just being replace.
Also Shrine shouldn't go obsolate, isn't it enough that it is civic dependant?
I like some of this, but not Storyteller Circle. I like the idea of linking Fire Pit/Ceremonial Altar/Temple because they are all ritual buildings. Storyteller Circle is more about entertainment; thus the happy bonus. I think I will push Elder Council going obsolete back to Alphabet so as to give you a window to upgrade EC to School of Scribes, and then push Scribes going obsolete to Journalism to give you the window to upgrade to Printer. There are a couple other buildings that are going to get their obsoleting pushed back to make proper lines (Town Watch and Gambling Hall are on my list).
I think Shrine going obsolete is to keep it from being too good in the late game when you have lots of resources. I think there is also too much of a cluster of religion civics in the Ancient Era and that they could be broken up somewhat.