What should be most noticeable about this new AdWords experience is the look and feel. This is Material Design, the design language that’s at the core of our favorite Google apps like Maps, Search, and Gmail. While this AdWords may look and feel different, your campaigns will run the same as they run today - with no upgrades or migrations. Google Announces it is to Entirely Redesign AdWords [adwords.blogspot.com]
AdWords will be "more about your business, and less about our product."
you do not have a clear understanding of the cost and what it is your buying
However, in the end, it will be all about an increase in revenue, and profit for Google (as it should be from their stock holders view point). Its the only reason they would invest so much into this.
Some local search small business people I have introduced to AdWords are daunted and don't want to touch it. They are afraid of it and don't want to deal with it, even if their competitors are using it.