In the Tags... dialog, when you click the Add tag button, or select a tag and click the Edit tag button, default focus in the new dialog box rests on the Cancel button.
Make the program just another little bit quicker to use
In case of New Tag, put default focus on the Field... Combox
In case of Edit Tag, put default focus on the Value Textfield
(Forth post, third RFE. Sorry for being such a pain in the ass . I do think different RFE's should be in different posts though. )