I hope you're right.

I'd have to look at the math.

Yeah, that was the essence of what I was thinking before I started writing my post. In your system, they probably won't earn as much as previously from just auto-voting, but it might be possible to vote late, and earn more just due to the size of their vote, versus possible being the largest vote on a post, period. It might be a good idea to just do as much as you can to encourage voting though.