You know, Real Madrid has no striker, they finally find out the missing puzzle by signing Mbappe. So, it is no problem at all by having Mbappe.
Having many quality players is good because it will make Real Madrid to perform well. As long as there are no many players who compete with a certain position, there is no difficulty to face by Ancelotti. Mbappe is the only striker in Real Madrid, he even has no competitor. Even Real Madrid signs Joselu or another new striker, Mbappe still can be in the main lineup because Mbappe can play as a winger.
Yep. Bellingham will return to his best position as a center midfielder. There are Tchouameni, Camavinga, and Valverde who can be the other options for the midfielders position. Not sure who will be the main 3 midfielders in Real Madrid main lineup, it should depend on the situation. Tchouameni also can play as a center defender if it is needed. So, Ancelotti lots of options now.
Actually, having many great players can help the coach achieve success even though sometimes it will create competition between players in the team. But if the coach can utilize every quality of the existing players then it should be much easier to rotate in every match. Mbappe has a much better quality than Joselu and Mbappe will certainly be the main choice for Ancelotti. But even so, it does not mean that Joselu is not used because in certain matches Joselu will be the strength needed.
For example, like the semifinals and finals of the Champions League last season and he made a big contribution to Real Madrid so that they managed to get the trophy. I am sure the more quality players a team has, the easier it will be for them to achieve success because there are many choices in making strategies..