Custom Actions - "Select Field" Enchancement - Recently Used

Hi Guys

A really good tool for me would be when creating an Custom Action you have the Select Field link which brings up the Insert Field dialogue (attached). It would be really good if there was a Recently Used tab for fields that were selected historically for that CA (different for each CA obviously). Alot of the time you just select the a certain range of fields and usually the same ones, so having them easily available would be good, without the need for typing in the Search.