"When all else fails, complicate matters"

This quote by Aaron Allston recommends that when whatever else has actually been tried and has not worked, the service might be to make things more complex. It implies that in some cases the simplest options may not work which adding layers of complexity may be needed to solve an issue. This might be interpreted as a call to believe outside package and not hesitate to make things more made complex in order to find a successful resolution. It also highlights the idea that often the most difficult and difficult courses might result in the most satisfying outcomes.