Metadata templates similar to Bridge or Lightroom or Photoshop need to be integrated in Premiere and Prelude. Right now, this must be done on a clip by clip basis in Premiere and is limited in Prelude as far as how much data can be included in a template. In premiere you cannot batch metadata for group of clips. Please allow batch changes for metadata to clips.
When a clip is nested in the timeline all the metadata that was in the source clip disappears. Please make it so metadata is read from source clip at minimum then can be changed or appended as needed.