Any chance that a component could be added that would allow you to roll up a value in a collection (count) that could then be affected by the built in multifilter?
Case would be:
- All records have a budget amount field.
- All record budgets in a collection roll up and could be seen in a text element or big number element.
- When multifilter is applied to limit the records in the collection, the budget amount updates based on filtered records.