I would love to see Comix have support for highlighting part of images(similar to how you highlight books with a yellow marker).
The highlight color would be adjustable.
It would allow you to click and drag the mouse. It would create a transparent window with the highlight color over the area you selected.
Highlights would be saved for each file/archive and reloaded automatically when opening a file/archive.
And you could add notes for each highlighted item.
The highlights themselves would just saved as coordinates/notes/color in a text file
This would be great for highlighting important paragraphs/vocabulary/etc.