Add an option that allows a user to be permanently logged in on their computer (like all major web applications have these days, including things like gmail and facebook), instead of being logged out after an hour or so of inactivity.
Why should we implement this
This feature is needed because it's incredible annoying to have to log in before you can clock out for the day, it adds extra steps and takes unneeded time.
Users that share computers could of course not use this feature, but theses days the majority of workers have their own assigned PC that is for them only. Here that kind of feature would work perfectly well.