This is more a question than a feature request.

When parsing JSON files, I need to sanitize the field names so field with spaces becomes field_with_spaces.
I want to preserve the original name as well, metadata about the column if you like :)

There is a metadata field on StructField, but it is internal.
Why is this internal, is it possible or desirable to expose it?

Is your feature request related to a problem? Please describe.
Some areas of the web portal have issues with screen readers. Here are a few examples

Describe the solution you'd like
Improve readability for screen readers across the web portal