Time quota-based policy management.
As well as data quota allowance can we have a time based quota? To work with content and users with or without existing data quota. So my kids can have "x" hrs of (web filtered) internet access, anytime in a 24hr/5 day/month period and as much as they want (based on data quota if applied) when they have access. This would have a benefit in business as well I am sure ;)