Hello Mates,
you are all right in your way of argumentation.
I figured out: Floors made with craftable Stone Pavers will have a max hight of 74 so u can place anything else. Building up higher than 75 so it depends where u are.... on the west side of Buildings / Castle u can go up to 77. When u built higher than 75 and after the next server up all is gone... have a look into your moving crate
I Reached the max hight of 112 with Gozas... and im able to place there Raised Garden Beds and Fontains of Life.
In order to be legal i sent a Mail to Messana and i asked the GMs and our Shard EM. They confirmed that it is ok like i did it.
This is what i learned while i redesigned 2 Castles
Have Fun
Souli