Could you explain to me how E airspace to a low level can be any safer than G airspace, where you are seperated from IFR aircraft, but are not seperated or made aware of VFR traffic. Without radar coverage,I cannot see how E airspace would be safer, as your safety is reliant upon the lowest common denominator, ie a VFR aircraft. Your safety levelwould increase if vFR aircraft were required to get a clearance to enter E airspace, which means they would then be notified as traffic. Whilst I have TCAS to provide some protection whilst on descent, it is the last protection and reliant on the VFR aircraft having a servicable transponder and it being switched on. What worries me, is the turbine commuter or RFDS King Air behind me, also decending at 250 kts,which do not have TCAS as the final protection against unnotified VFR traffic.