It'd be neat if the Current Usage page on the website also showed an estimate of how much usage I'll have by the end of the current billing cycle, based on the usage so far this cycle. E.g. if it's 7 days into a 30-day cycle and I've used 24 minutes of talk time, then on average I'd expect to use about 102 minutes by the end of the cycle. Obviously the estimate can only be based on existing data and can't predict the future, but it'd be nice to know what I'm on track to use (and what that would cost me if I hit that estimate).
It might make sense to only have the estimate appear once there's at least 5-7 days of the cycle passed, to avoid insufficient data giving wildly inaccurate estimates. For example, if I normally use very little data on weekdays and a lot on weekends, then if the first day of the cycle is a weekend, after 1 day it would give me a monthly data estimate based on that one high-usage day, which could be very misleading—e.g. if I typically use 200 MB per weekend day and 20 MB per weekday, it might tell me I'm on track to use ~6 GB when in reality I typically use ~2 GB per month).
I realize that having the estimates there might confuse some users, so it might be reasonable to bury it further down or behind a link so that you only see it if you actively seek it out. Thanks!