Suggest improving the plugin's overlay behavior by causing it to warn when inconsistent versions of jars are detected. When the base war and the overlay war contain differing versions of a jar file, it's possible to generate a war artifact that contains multiple jars for the same dependency – but with differing versions. Results using the resulting war artifact are indeterminate and unpredictable. It can be difficult to identify the cause. Conflicts of this nature could be detected while the overlay is being performed.