Projections? Projections is not realtime! So AH is guessing what your usage in the future will be?
I think you are confusing terminology. Realtime refers to protocols. It would be unfair to shape only clients with a 30 day history if others are maxxing their lines in the first week. We also don't want to encourage anyone to cancel their account and sign up a new one every 30 days to bypass shaping. We give you complete grace within the first seven days with no shaping, thereafter we shape based on a projected usage. Obviously, if we don't need to shape, then usage is irrelevant. It also a means to analyse usage patterns over plain totals.