okay for clarification,
when i meant building below i meant exactly what you had in mind Maximum Spin, thats where the danger comes in, they literall hoist the entire block up by building below it. Underground building is not a thing alas., the point is going up...not down.
Robosons Pythagoras proposal would indeed work. The farm on the outside would get enough sunlight.
As for the heating problem with the farms. What i had in mind was indeed mushrooms, yeast and similiar things. Basically producing nutrient pastes. The farm in that case would be less of an actual farm and more of some industrial food production facility. Whereas the light getting one is an actual agri-complex.
Warning ahead of time:
In the spirit of completely unorganized, chaotic and inefficient bureaucracy, i will take bolded actions in the order they are posted, regardless if they make sense. So you might want to edit out those you don't want to happen.
It's basically your engineers and construction workers going "eh...he probably knows what hes on about, so lets just build it that way...even if it doesnt make sense"
As for hab blocks versus slums: hab blocks generate less heat, they are not prone to simply collapsing under weight or other problematic things. People in Hab Blocks have a higher quality of life, are not as prone to spreading disease as slums...in general you want everyone to live inan arcology or a habblock in a perfect universe.
In here you can watch as slums ruin your day.
For fairness sake i will place slums in ways that are least obstructive, until i run out of places to put them in.
Arcologies stacked on top of each other still work like Arcologies that would have been at the top of the spire.
So something that would look like
A
A
A
H
H
Would still be counting as all Arcologies being at the top of the spire.
Beyond that the High Society demands with the Arcology being the highest spot that nothing is above or the same level as the Arcologies, take heed of that and also take into consideration that Slums will be built.
I leave the choice to you whether you want me to consistently and generally build slums below other buildings or just into free spots. Both is possible. The First choice would not destroy your careful placements but might cause collapses.