See https://medium.com/bi-helper/automated-distribution-of-power-bi-reports-and-dashboards-25fde6c68af0 for a fully automated report bursting solution.
To set filter, slicer and email values dynamically, see this option with Power Automate + Power BI Pro. https://medium.com/bi-helper/burst-your-power-bi-reports-838ab593f7bc
Agreed. Required for purchase returns so they can be handled the same as sales shipments when shipping from warehouse documents.
This would be a huge improvement. Any individual field changes on a visual mean I have to remember to hide the field on the visual filters. Having all those filters unnecessarily are really confusing for end users.