Staging/versioning of preloaded Javascript/CSS

Currently, there is only a global preloaded Javascript/CSS. If any breaking Javascript is introduced anywhere in the preloaded script, all apps using any of the script become broken.
What are Retool's current thoughts on somehow increasing the number of versions/sets of preloaded Javascript/CSS available and enable specific applications to load one or more of these versions?

Hi @bliang! Multiple retool instances is something that many on-premise customers do as a solution to this, but it would be great to be able to edit the preloaded script separately for the staging and production environments.