Greenfield & Rebase Client Configurations: IFS R&D help needed

IFS Docs has an article on Rebase Client Configurations:

https://docs.ifs.com/techdocs/22r2/040_tailoring/225_configuration/200_client_configurations/400_rebase_configurations/?_gl=1*ow9p91*_ga*NDY5ODcwMjM4LjE3MDY4NTgwNTE.*_ga_H7YJR9R7Q1*MTcwOTU2OTc2Mi4zNi4xLjE3MDk1NzAwNjYuMC4wLjA

Could anyone from IFS R&D explain how this aligns with staying greenfield? When there are many page configurations (and it is logical to have quite a few), every SU and RU will require a painstakingly manual process of rebasing. When will there be improvents to make this less work and less error prone?