Display estimated audience on launch page for all engagements

The email engagement launch page includes a summary of the engagement such as time, ocucrance, estimated audience size etc. This summary is helpful in ensuring everything is set up right one last time before you hit launch. The estimated audience size in particular is very useful when your engagments are meant for a subset or very specific part of your audience base. 

However, this is available only for email engagements. Would love to see this extended to all types of engagements, sliders, dialogues and guides.