Your idea does appear to have merit OneMileHigh. However, I do not fully understand when you say that the "circuit will be entered from the dead side at 1500'". The whole purpose of a dead side is so that joining traffic can descend safely clear of circuit traffic, your plan sounds like you would have aircraft climbing in the dead side area? Your idea of 1500' circuits for noise abatement is good. Maybe just clarify where the climbout would be?