A hallmark of Lean Thinking is simplicity. We can address simplicity in the physical aspects of our jobs or processes. For example, placing our tools within close reach makes it easier for us to do our job (5S). This may mean rearranging the work area but in doing so we address one of the eight types of waste - unnecessary movement. Sounds too simple (no pun intended)? You'd be surprised how much easier and more efficiently a job can be completed.
Simplicity can be applied to intanglibe aspects of a business too, and often we see how effective the results can be.
A real world example is Ford's "One Ford" campaign, involving the integration of "its international units and simplification of its global structure. Ford was profitable despite industry woes in the first part of 2008 and did not require government assistance."
A non-convoluted process will win your customers' loyalty too. Making it simple for your customers shows respect for their time and makes your organization transparent. Needless to say, this will have positive effects on the underlying relationship you have with your customers.
Harvard Business Review Blog
The Next Big Thing
In Simplicity We Trust