Feature Wish: display a value, indicating the level of brightness & contrast settings
Setting brightness and contrast with the slider without a feedback of the used value, does not provide the possibility to remember the settings.
If it would be possible to display a number, which indicates the setting of brightness and contrast, it would be possible to note the settings for certain kinds of scans.
So for the next time, when scanning certain things, it would be easier to look up the settings and set the values in simple-scan, before starting the scan.
In this way, scanning-results can become better predictable.