Yeah, I'm thinking 1 million HP mod until NiM DF/DP (or w/e the next tier is) gear comes out and switch to the 1.5 million HP accordingly. And yes, it would make doctoring much more difficult to do and much easier to spot.
Why not simply start with the 1.5mil mod right now? That would eliminate the need to switch later.
Or was the plan to eventually archive yet another "generation" of DPS leaderboards?