Some suggestions: move the whole to settings, it is a daemon and its behaviour should be under "Settings -> Applications" me thinks
add a slider to deactivate all and add a slider to deactivate each
add "if idle in this case for #min do $changes" additionally to cases
copy a case (it is really hard to record cell-towers during meetings and such... like 5 cases for work, each time I add a new one I have to wander around to get the towerinfo)
I have cases timed once a week but I do not have the device for a week yet so no idea if it's buggy or not...