Thank you @hien_nguyen for your valuable inputs.
I have documented requests for Support for Markdown/HTML Rendering Across UI Components and Support for Markdown/HTML Rendering Across UI Components.
In regards to Batch Write for Parent-Child Form Submissions, I found there are ways to achieve that. Please refer to the links below
- How to add children to parent record in form view
- Automatically create parent and child records one click
- Creating new parent & child record with Actions from an old parent record
I hope this helps!