The updated version of the smoke cleanup is among my Mega links. SirRidley had also previewed a version of that shot on YouTube which looked even better than that (at least in low-res), I don’t know if that ever got rendered.
You regretted V1? As in the quality wasn’t all you had hoped for, or you had second thoughts on the concept?
I hope that there is a V3 at some point, if only to give it that extra shine that it could have had with only a week or two more work.