Essentially every new post would be eligible, subject to its own reverse auction. Same as now, only more curation rewards.
I haven't completely thhought it through like that, but my feeling is that it would create a giant snowball of reverse auction funds that get re re re re reversed but never awarded.
EDIT -- no it wouldn't, but it wouldn't change anything at all either. You would eventually get to the point where the curation rewards were increased in magnitude to the full 25%, but were distributed in exactly the same proportions as now.
So if we lost 50% of curation rewards now, it would just double all current awards.... which isnt necessarily bad.