In the case of vents or symbols not really
If you add a vent on the larger side it looks like a vent, on the smaller side it is a blurr of black. If you add it on the smaller side it looks rightthere, but on the flip side it looks like a small hanger.
In symbols one side will look right. for the other the symbol will look like it was built of legos, or be a red blur.
About the only thing you can add is lines like those used on the secondary hull. only problem is the tapering and lining them up if they flow around the hull. If you add vertical ones lining them up witn the saucer becomes nightmarish. might go back and play with it after I get everything else I need to get done out of the way but that will probably be around X-mas (if anyone modelling is still at these froums by then)