You are asking for 800m to be a four turn stagger race without directly stating you want 800m to be a four turn stagger race. First it takes enormous discipline for an elite female in 800m to mentally block out what others are doing and race 14.4 second 100m splits. Second, racing even splits at a championship 800m often means racing in last place the first 300m which has it's own emotional costs. Third, racing even splits in a championship 800m likely means racing in lane 2 or 3 over the final 500m. James Robinson made a career of doing this. He kept coming up short. Robinson was often in lane 3 the last 300m. James Robinson certainly would have done at least equally well with four turn staggers. In general I am a huge advocate of even pacing but I realize there is a trade off in extra distance raced racing even pace 800m.