With regards to the workspace hierarchy - parent / child feature
https://www.gooddata.com/docs/cloud/workspaces/workspace-hierarchy/:
• Is it possible (and advisable) to leverage this in a situation where each of the child workspaces share the same LDM and visualizations as the parent, but each must have a different data source (as they are different customers and therefore they need their data strictly separated)?
• How many levels of hierarchy are supported?