Hello.
I tested to put the message server on a webhost and added it as a remote config file.
Surprisingly, when adding new systems the message server will be a dropdown, and when selecting a system it populates the other fields.
It could be a different way to "distribute" selected systems.
Especially when you have many systems and not all users are in every system this could be helpful. Yet the end user needs to select which system to add.
At my company we have defined a database and created a sap logon generator tool that the users run to populate the entries into SAP logon.
But ultimately we are striving towards having one system logon and remotely assigned roles so the users do not have to consider which system to connect to.