I've been asking for this and improve custom matches settings by adding more options since it's soo hard for the developers to make more maps I bet the community will do it
Look at halo MCC and Fortnite put the pvp custom aspect in the community hands and they will have a field day with it they will make more maps in a month then you could do in a year
*More Private match settings
*Make Private matches more open to the public for players to get into
*Customizable Maps