ahhh . . . the fatal flaw of EV as it is usually implemented . . . the belief that all work is created equal . . . a few questions for David . . .
What is your definition of "progress?"
What is your (team's) definition of "efficiency?"
How much of the future work being worked now is subject to rework once you work the things your (I assume) carefully built schedule says you should work on now?
Why does the plan say later, if they can truly be worked now?
If you get all but one critical task done, and that task never gets done, what will your EV system tell you about the "value" of the project?