The ability to remove weekends in the time estimate would be a really helpful feature. This way I can use the time estimates for (human) resource management. Right now, if I budget over 56 hours (seven 8 hour days) the time estimate rolls to 1 week -- which is counted as 7 consecutive days -- which is a little deceiving since in project planning time a week is 5 days and a month is counting only workdays, not 30 consecutive days.