This sounds very interesting - thank you for your efforts!
We’d love to accept your contribution and have a topic dedicated to the process for doing so here.
We can use this topic to discuss the feature and how you’ve implemented it. If everything seems to be aligned then I will create an enhancement issue tagged to 1.8.0-beta.
The final step in the process is signing the CLA and submitting a pull request on GitHub so we can review the changes.
As a next step it would be great to understand exactly what we’d see on a campaign preview and what a vignettes is.
Thanks,
Dan