Removing the ID (employeeID) from the connection name makes it to be neat. As far as I know it doesn't add any other technical value.
The availability of the data connection depends on the Security Rule applied on the data connections. If you have a group of developers, Qlik Administrator can create a security rule that allows the connection to be available to the developers and restrict consumers from accessing the connection. Developers need not to create different connections for the same source of data. Thus, connection name is not only available to the owner.
Hope this helps.