This isn't something we have planned to add, no (sorry).
Two options for the current version:
1. Change sorting to 'by modified' to keep recently-edit documents at the top of the list (Settings > Advanced > Sort By…)
2. Add some tagging text to the document's name or in the text itself (such as @review or anything that wouldn't pop up casually). Then when you want to focus on current, 'tagged' documents, such do a search for that term (magnifying glass icon at the bottom of the documents list). Only files containing that search query will show up in the documents list.