Milestones of subprojects under superproject is ambiguous

The display of milestones under a super-project is ambiguous if its member sub-projects use simple numbers for milestones. An example is the Netrek project (https://launchpad.net/netrek) where you see "3.0" "2.9.2" "1.5.0" and so on, but each of these actually belong to different subprojects. This could be worked-around by making milestones verbose (e.g. "res-rsa-3.0" and "osxtrek-1.5.0", but then these names get rather redundant when you go into the subprojects themselves. It would be nice if there was a configuration option in the super project to prepend the subprojects' names in the milestones that are displayed in the super project.