Is it good or not to cap a large football field?

At present, the more advanced stadiums will have folding roofs, which can cover the stands in rainy days, but they cannot be completely capped. Once capped, they will become indoor stadiums. Natural weather is also part of the football match. In order to better protect the turf, some stadiums will install a floor heating system under the turf, but for the players to play more comfortably, it is impossible to take artificial cooling.