The algorithm from TomH was specifically made to fix a known problem in the now chosen algo.
nChain: D622 is 3.1% (+/- 1.2% at 95% CI) better in most instances, but there are edge cases against it.
Maybe we can keep the hard fork time and pick a more logical choice to actually move towards. A choice actually based on technical merit.
Do you really want to risk a contentious split just because you didn't get your algorithm chosen?