Dive summary: 

• The advantages to search from Google's new Enhance Campaign are a bit easier to pinpoint, but display campaigns will be changing too. 
• Some of the key advantages from the changes include: the option to add any and all targeting methods to your desired group, the ability to choose how targeting methods should interact, the capability to set an ad group default bid and the choice to set custom bids. 
• The further advantages of Enhance Campaign allow users to adjust bids per target rather than per device and specify the multiplier for a target. 

From the article: 

"It's starting to look good. If each of your targets is one way of determining a person who is likely to convert, then a user who matches more of your targets is even more likely to convert, so now you can easily enter the auction with a higher bid appropriately. That will increase the chances of the person seeing your ads. Good, right?"