People confuse casual games with “noob” games, thats a huge issue. It was the same in aoe2, a new player is scared of playing rated then goes into casual, and gets demolished 5 times in a row, and have no idea whats going on… We MUST have visible rankings for fair games to be possible.
Imagine current/old eso, if I host a game “mid tier players only” how is someone supposed to know what the skill level of players in there? A master sargent might think he is mid tier because he is way better then begginers, and a lieutenant colonel might also think he is a mid tier because he doest stand a chance vs top players. Both are right, but a MS vs LtCol game will be awefull for everyone involved, as one team will just stomp the other.