Thanks for making a great application with continious improvements. At this time, yet another feature is require to add in DfM. It's nothing but, notifiacation feature for new dictionaries.
If you add dictionaries to the list, then the app should notify users about new dictionaries. It'll bring the attention of users toward new dictionaries.
At present, the users are need to refresh the dictionaries list every time to know about additions of new dictionaries. If the user hasn't refreshed the dictionaries list, then they will not getting know about new dictionaries.