MBS makes certain decisions that need to be communicated to the user. One clear example is when the buildrequires are changed due to the branch name. Another might be letting the user know which module build is being used for component reuse.

One idea to display this information to the user is to have a "messages" list associated with a module builds in the API. Then a tool like fedpkg would be able to read that list of messages and print them to the screen as they are added. MBS UI would be able to just list them all on the module's details page.

This would help reduce confusion and not require the user to read documentation to understand certain MBS concepts.