It would be a good imporvement to make packages (and functions, procedures... everything, that is placed on the filesystem), that are stored in a project, renameable (item and file) via the project items view and from menu project > project options, tab Items.
Currently - as far as I see it - items must be removed from project, package files renamed in filesystem and re-added to the project.
Currently - as far as I see it - items must be removed from project, package files renamed in filesystem and re-added to the project.