It would be great to have a transparency tool in the Explorer for ArcGIS mobile app. I generate .mmpk files with vector geology layers overlying geophysical imagery (as a .tpk base layer). It would be useful to make the geology layers transparent over the geophysical imagery instead of simply switching layers on and off (current functionality).
Geology (vector layers):
Geophysical Imagery (.tpk)
Would be ideal to make transparent in the mobile app.