But simple is misunderstood by many, often seen as a negative, unsophisticated or non-intelligent treat.
I think that we need to share a common definition of what simple means in creativity (in design, ads and digital)
Simple means easy to understand.
Simple means clean.
Simple means as few steps as possible.
Simple means taking everything else out.
Remember; identify what's important and eliminate everything else.
There are some good books on this subject, and one that comes to mind is The Laws of Simplicity by John Medea. Enjoy it.