It does however not reflect the skill of players who have played less than 3 games.
It’s not particularly important in most cases, but sometimes it is. I’ll exemplify from my own experience.
L19 I played koala, who turned out to be a very competent player. I did some silly mistake that was taken advantage of and was smashed. Counted as a tier 3 loss albeit the opposition was about E.
I also took on a bunch of other unknowns and that was a “mistake”, atleast ranking-wise.
This season I’ve been kind of nice in a couple of games, taking on new players, and although I’m happy to have helped introduce them to the league, those wins actually suck for me, N.B. ranking-wise.
I won’t take on any more new players, ever. Unfortunately. Because of the ranking-system.
This season I play with koala. I might very well lose again, but I believe it’s not fully certain. Even if I win, it looks like koala, the likely tier E-player, will not complete 3 games this season either and that win or loss will suck for me. Rating-wise.
I don’t want to complain too much, but I discern these points as a serious flaws, however small they are.