Best ideas must win. They must win irrespective of who brought them up and how long that person has been with your organization. Whether they are a CEO, a President, or another executive or a temporary employee who started last week, quality ideas must always be enabled to rise to the top.
Diversity of opinions, experiences, backgrounds and education is a positive aspect which should be leveraged for the benefit of all. Ideas should not only be generated by an exclusive number of people, but rather should be encouraged and expected from all employees.