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

At present, some advanced stadiums will have folding roofs, which can cover the stands in rainy days, but it is impossible to completely cover them. Once capped, they will become indoor stadiums. Natural weather is also a part of football matches. Some stadiums will install floor heating systems under the turf, which is to better protect the turf, but it is impossible to take artificial cooling for players to play more comfortably.