Measuring Conversions: Only count people who open/click an email in a Journey towards the jourey goal.
Currently, people can enter and journey and NEVER click any of the emails in a campaign, but still get counted towards the journey goal (unless you create a Smart Segment where 'paying customer + opened Journey email' is included in the Smart Segment).
Ideally, changing the insights tab to provide different levels of conversion tracking would be ideal. For example:
Direct conversion are tracked when a recipient clicks on a link in one of your emails, returns to your site and takes an action in the same session.
View through conversions are tracked when a user opens the email, does not click a link and returns to your site to complete the conversion event within a set time period.
Indirect conversions are tracked when a user receives a campaign, does not open or click the email and later completes the conversion event on your website. (basically what happens with Autopilot now).
These notes were taken from: https://help.getvero.com/articles/conversion-tracking.html