Hoping for some upgrades to the Conditional Visibility function in the Email Builder. Specifically:
  1. "Null" values to work when action is set to "is not"
  2. Inclusion of Custom Values as the reference, not just Custom Fields
  3. Conditionally visible layouts, not just elements
  4. Additions to the action type - such as "is before / is after", "is above / is below", "includes", "does not include".