Hi Peter,
At first: your plugin is really great! I love it at first sight.
One of my website is using Polylang plugin. Website is mainly in Polish language, but some texts are in English. So it has polish and english menus.Is there any way to make your plugin compatible with Polylang? I think (but I am not certain) you could make wpml-config.xml file for your plugin. What do you think about it?
Greetings