Thanks for the links John.

I'm not sure why rescaling is unexpected in an accelerating expansion but from the rescaling link I can’t tell how it could be detected. And even this new WMAP figure of .249 is not much changed is it? How does that make the.25 Omega at the rescaling site encourage experts to reconsider rescaling?

With Omega of ~.25 and presumably Lambda ~.75, plus throw in a little Baryon density of .04 and you get a pretty flat picture. Does the current thinking re. rescaling consider that there is some interaction between dark energy density and matter density? Or some revised calculations of the effects of gravity?
A little more information or discussion would be helpful to put this into perspective for me.