If every proofer knows that every page is going to be looked at by someone else, will they proof that page differently than if they intended it to be one-and-done?
Under the *current* DP system everyone knows that everything being done is also going to be worked on by about six other people. The hard part then is getting anyone to feel "ownership" about anything -- particularly about getting something *done*. Automatic scoring of proofing efforts and automatic reporting back of scannos that slip by that other people find -- without making a "big deal value judgement" about those that slip by might make a positive contribution. Getting more people who care to read the finished or almost finished product and providing an easy and convenient way to give feedback on bugs found, or god forbid to be able to actually fix those bugs directly might also make a contribution.