I'd like to give a very simple suggestion for implementation for the Storyboard Editor. How about a "bookmark", where you get back to the frame you were previously working?
If you have let's say, 100 frames, and you enter frame 88 from Story board editor to check out something, then you get back to Storyboard editor, you're at frame 1! Wouldn't be more logical when you go back from Frame Editor or Event editor, set focus on the latest frame (88), instead of scrolling again to the right to find the frame you were working on?