Does it help against a cheater using 2 accounts? Does it help against 2 pre-teamed players? Does it help against early resigners (those who resigns on 5th move or later, but too early)?
I guess it is "no" to all 3 questions. And those who resign early will lose even less rating points than they lose now.
Looks like those who cannot become the 1st in a particular game will just resign and start a new one.
FFA chess shares a lot with the game of RISK.
On Gambit.com, RISK ratings are calculated this wau. Only the winner wins ratings, all other players lose rating. The winner wins the rating for all his 'individual matches'. The losers would lose rating relative to the winner
For example: let's say we have a game with player
A= 1700
B= 1600
C=1500
D= 1400
Let's say B wins: So B would win +13 for beating A, + 7 for beating C and + 3 for beating D, hence his rating would go up 23 points
player A( 1700) would lose his match against player B ( 1600) so he would lose 13 points
PLayer C (1500) would lose his match against player B( 1600) and lose 7 points
Player D ( 1400) would lose vs the 1600 and lose 3 points.
Another example: All 3 players have the same rating, the winner wins 30 points, the others lose 10 points.
Another example : A1400 wins vs B C and D who are 1600 A wins 51 points, all 3 others lose 17
I think this would be a better way to calculate FFA ratings. Because since only finishing 1st would matter, everyone would be trying to win. Hence, we should see a lot less self-destruction to secure second or thrid place, alliances would have to switch more often, with people allying against whoever is threatening to pull away with the win.