Basically, it would be better if when adding a frame you could chose where you want it.
For example, if you had an icon with 3 frames, yet you wanted to add something between the first and second frame, you would have to make a new frame, then copy and paste frames 2 and 3 and move them over to 3 and 4. This becomes pretty tedious when working with multiple directions.
What would be nice would be being able to select where you want the new frame to go, such as between frames 1 and 2.
I hope this was understandable...I've never suggested anything here before.