This is a really nice write up and a clear explanation of a real organisational problem with terraform. This seems more like a design pattern to me though, I do

This is a really nice write up and a clear explanation of a real organisational problem with terraform. This seems more like a design pattern to me though, I dont quite see the need for a specific tool? Terraform has the ability to work with remote tfstate files, reference resources in other tfstate files via terraform_remote_state and unique instances can be labelled via a tfvar ID as a pre/post fix. Is this a polished wrapper around those mechanisms, or is there more going on as well?