Shadows or Outlines on Signatures
Even when drop shadows are done properly, they generally do not make for easier reading, as there is more for the eye take in. Sooner or later, clients will realize this and want cleaner, easier-to- read type in their identities.
Overlapping Creates Clutter
As with many of the principles in this book, overlapping may not kill an identity, but it never helps it.
Think of an athletic competition when hundredths of a second can mean the difference between winning and losing. Athletes might carry extra weights when training for an event but never while actually running the race. Some of these visual extras are just that: extra, not necessary, a hinderance. More for the eye to digest and parse.
As mentioned earlier in this book, Simplicity is the Soul of Good Design.” Overlapping is the result of thinking, “What can we add to this identity?” instead of thinking, “What can we take away?” The latter usually gives better results in identity design.
Adapted from Logo Design Theory: How Branding Design Really Works