[sldev] Option to make minimap display map data?

[Feilen]

I've often noticed that the map displays full color incremental 
screenshots of an entire sim, while the minimap simply layers on grey 
for wherever prims are. Though this can sometimes be useful, the grey is 
very often skyboxes or useless data. Could there be an option to make 
the minmap display simple map data, for a more static, general but 
detailed look at the sim, rather than the current prims on display?