Commentators and narrators are always the centre of complainings from the audience here.
For this WC the channel which has the rights is following their tradicional procedure for football matches. One narrator, two commentators (usually a journalist and a former player) and plus a former referee for the referees' decisions.
But I hate those choices, especially for former players. There are so many people who study a lot to work with it, and at the end, they choose only former athletes - not only in football - who are not capable to give good commentaries, or even speak decent portuguese. Some of them you can see that they are clearly not prepared to do this work, once they dont even know some players.