import grouping by burst shot and option to maintain grouping after import

As I am importing many sports shots from events, I would like to be able to group by burst shots, group images taken within 2-5 seconds of each other as an option. Often when finding a good location the only part of an image that will change is the athlete. This would help in being able to add keywords with their bib number or bike plate number and speed up importing.

The ability to add keywords to groups in the import tool would dramatically help after import.