MSI Best Bets
I was just researching some details about MSI for a relatively new Marketo instance integrated with SFDC and happened upon this screenshot in the product docs that I've never seen before:

In all the instances I recall seeing (and I have access to 3 at the moment), the "View" drop down didn't/doesn't exist and I've never seen "Best Bets" before. Can anyone shed any light on this? Is it a new feature? An old feature that isn't used? I'm not finding anything in the product docs about how to enable these features.