What inspired this wish list request? I would want to see just limited selection of rows in the data table but I currently have to subset the datatable to have a quick glance at the selection.
What is the improvement you would like to see? Add in a "hide in table" option for rows where the row itself does not appear in the data table, much like you can do with columns. This could work much like the filter options in excel.
Why is this idea important? I am often concerned with only viewing a small selection of my data in a data view "analysis" but I don't want it to be in its own data able as I am still using all the data in a global view in something like graph builder. Also, anytime I can do something in a table without having to make a new table (less windows!) is always a win.