A big reason we haven't migrated a few old Esri Story Maps to new versions is a key bit of missing functionality, specifically in regards to ArcGIS Dashboards with URL parameters. The useful thing about a tabbed story map is that if you have the same dashboard on multiple tabs with different URL parameters clicking on a new tab won't reload the dashboard, it'll just change the URL parameters. This allows for multiple views of a dashboard with multiple filters being applied to multiple elements as well as a pan and zoom to happen when clicking on a tab.
Story Map Collections doesn't quite work; in addition to having a cover page that isn't desired, each tab forces a reload of the dashboard every click which is a much worse user experience. Instead of a click shifting the map focus and filters it gives a blank white page until elements which were already displayed reload.
I also tried the ArcGIS instant app Portfolio and I imagine I'd run into the same problem except that even when I'm using the URL option and give uniquely different parameterized URLs, it auto detects that they reference the same item and do not allow me to add a second one with different parameters.
I've also tried the Experience Builder but encounter similar issues where it reloads the page instead of keeping the page loaded and switching to the different URL parameters.
The only solution I've found that does work is to just write my own housing in JavaScript which can change the URL of an embedded dashboard with the same behavior as an Esri tabbed Story Map, but it's not great due to the additional hosting requirement.
I'm curious if there's any other options I might be missing? Maybe an embedded content window in ExB linked to a dummy data source with the URL parameters as attributes and having feature views to drive what's displayed in the window?
