I came up with an idea, I doubt I am the first to have it but still, about shading. While it would be a lot more work, would making shading an overlay be worth the visual bonus if it was done right?
An example of what I mean would be, say a game had a day and night system. Would it be more visually pleasing to have shading on a mob be created by an opaque layer, that is changed based on the time of day or the type of lighting. So, a lighter, opaque layer that is accurately placed over an icon during the day-time would be used to project that the sun is what is shining on them. The general icon would be lighter, and have a stronger glare than a night-time overlay, while the night-time overlay would give the entire icon a darker appearance and less glare.
Just wanted an opinion on whether or not it would be worth the extra work to get the visual bonus.