It's basically like what's been done in every sport here, in the US. Half the teams in the 4 major sports make the playoffs. Sometimes, you can get in the playoffs with a losing record. It definitely adds excitement, because playoff games are exciting and there are more of them. It definitely brings in more money. But it also seems a bit unfair to not reward teams for doing better in the regular season and it can make a lot of regular season games less exciting. And in baseball, teams that get a bye tend to suffer from a longer period with no games (it's not an issue in hockey and basketball, where there is no play-in round or it's quick, or the NFL because of how much a break helps there).