The Analysis page on the collection-specific view should include dynamic fields, same as the Schema page. The only option now is to use the field type for analysis, which works fine but it would be more convenient to have the field info too.
Example adding a custom type
Field is visible on the schema page
But not visible on the analysis page
Maybe a personal preference, but the dropdown search only matches the beginning of the name, and it would be really nice to have it also match inside the text. For example looking for 'custom' gives no results on either page.