It may be to late for this, but perhaps this recommendation would be considered for future releases (if this is even within the scope of possibility). In the cM7 settings, users have the options to define the status bar power widgets that are present, and some of these buttons even have presets. One of the buttons with presets is the screen brightness button, which enables you to select how you want your brightness to change when you press the button. There are a number of preset options that work decently, but I think it would be amazing if the user could define custom cycles for the button. This would enable me to have my screen brightness button cycle through 10, 25, then 70, if I choose too. I have never really felt that the defined cycles really fit my needs.