I've raised this question in Wix Blog forum, but it seems like this may be something that can be achieved now with Corvid code.
When viewing a Custom Feed on a page, the visitor is transported to a different place on the site (the main blog module) when they select a post to read. This creates confusion, inconvenience, and navigation problems for visitors.
Can the link for the post in the Custom Feed be modified via Corvid code so that the post opens in a pop-up window? When finished with the post, the pop-up is closed and the visitor remains on the same page, rather than suddenly at the main blog module.