I think that this is a very correct thought.
The next version of Online Maps will contain this.

I am using a Tileset map. When Online map create the "Markers" gameobject, it is created with the layer "Default" instead of the layer of the gameobject containing the OnlineMaps script.
Is it possible to change the layer of the objects instantiated by online maps to match its own layer ?

However I don't know if it would be desirable to also change the layer of the prefabs instantiated since the user may have set a custom layer on the prefab.

Thanks!