In a 4 player game, If you have a play that give you 10% to get first place, and another that give you 30% of getting the second place, the elo system reward you for the latest option, but a lot of the time that play also seal the result of the game letting the first place secure his victory ruining the game for anyone who try to win the game, you don't have to win to have a fun game, but it's not fun wheel people don't try to win either.
Also people don't give their all with this system, they just go with the safest option to secure points, also in most games the points of everyone but the first place don't represent the match, the second best almost never get the second place.
I do feel like it should be optional, afterall we all don't give our best in the same situation than the rest.
But it's still so boring, like when a football team go for a tie or defeat to have a weakest opponent in the next round, is frustrating to lose against someone like this and it make the game so boring, even when you are winning if boring because noone try to take your first place, or you get a help you don't want, every time someone give up the first place and go for the second the game is so boring for the rest