The following not only applies to action controls but also to input fields, labels, calculated values etc. in text areas which have font atributes (type, size etc.)
It is possible to set the default font for text areas, but this does not apply to action controls which is annoying. It should be possible to set the default font for action controls, input fields etc.
Furthermore, it should be possible to format action controls etc. directly in the text area by marking them and changing the formatting WITHOUT having to go through the "Format control" dialouge. The format control dialogue to me seems necessary only for changing the size.
Furthermore, if text is selected in a text area and the selected portions contains an action control, there are no format options available which is annoying whent text has to be formatted differently and contains lots of controls.