Here are my inferences about how the new dom scoring works.

At the beginning of the fourth round, all survivors pay 15 points into the dom pot. No more points are paid in at later stages of the game. Every player who survives to the fourth round has at least one land; the share of dom is average lands held at start of turn divided by all lands held at start of turn. If there are 30 lands, your dom payback per land is approximately three points. So if you go out with one land, your dom is about -12 at worst (15 paid in, 3 drawn out). By the time 5 players have gone out, at least 15 points have been drawn out of the pot, leaving 90 maximum left in play if there were seven players to start with (having put in a total of 105 points). If players draw out more points by flagging early, the amount left in play for the two finalists is less.

Under the old Elo system, place and dom were about 50% each, but under this system, place is about 70% and dom 30%.

Since the dom penalty does not kick in until the fourth turn and you can flag on your third turn, flag on your third turn to avoid the dom penalty.