Interesting! Would it be possible to include this source in a Multilayer source, or to make directly the java map source a multilayer source? But anyway in the end it would indeed be a bit easier to use (though a simple script can synchronize the execution of the local tile server and Mobac), however it would also be more complicated to configure (in order to change the server URL, API key, ...) by requiring to recompile the package, especially if the multilayer has to be compiled in java. It also...
perform digital zoom with customMultiLayerMapSource