z-Order of 'Data Overlays'

[habi]

In my vicinity we have access to the simplified cadastral plan with the building outlines (Gebäudeumrisse), which shows up as a data overlay in Go Map!!

Some of the buildings are traced exactly matching the layer, making their outlines disappear on screen :)
Here's a screenshot with activated 'Data Overlays' and without.
The building outlines are not visible when the 'Gebäudeumrisse' Layer is activated.

Would it be possible to change the z-order (?) of the layers, so that the OpenStreetMap data is always drawn on top/last?

Somethings like in JOSM (where the layer order can be changed as desired (but which might not be wanted in Go Map!!)).

[bryceco]

At first blush it seems reasonable to place the OSM data on top. Because OSM areas are shaded there might be times when underlying “overlays” are partially obscured. I’d like to hear if anyone else has comments before moving forward.