I think only time will tell if this move is a good one and that's the same for Thomas Tuchel who is currently the head coach of the England team. His move to England was accepted by many and also questioned by many but we will soon see how this goes especially in their world cup performance next season which I think is among the main reason they signed them.
Ancelotti has had great success in coaching a number of clubs and it is only right that he seeks a challenge in the Brazilian national team and I am sure there will be big changes that can be made because a number of Brazilian players do have sufficient quality which will make it easier for Ancelloti to manage the team. Time will prove it to him and vice versa for Thomas Tuchel who is now the coach of the England national team and in the upcoming World Cup they can prove the quality of coaching in handling their respective teams.
Some of Brazil players have been coached by Ancelotti and they're doing pretty good. Vini and Rodrygo is in Madrid and Ancelotti has been able to manage them and build them. Brazil National team has suffered a lot of humiliations from other National teams, I think that it's high time for Ancelotti bring them back to the light.
Carlo anceloti is in at Brazil but don't also forget other national teams like England that are now working with Thomas tuchel after Southgate left and have proven to be doing better than they where doing before now. As much as Carlo anceloti will be a good coach at Brazil, he's going to experience another tough session with the boys because obviously, other national teams are not folding there hands to allow him get past them. He's going to have an easy ride with the team because of the familiarity he already have with the big players in the squad but he's going to also work on never allowing that familiarity get at him so he doesn't get the kind of result he currently has at Madrid before the exploration of his stay.
Hopefully, with a team that's more determined for a good result and the potential that he has, he should be able to get something with the team and give Brazil what they've longed for.