[2020] Custom maps for events Request

Why cant the custom maps for events be in the custom game mode (either be it free or cost money to buy a said map to play). There are a lot of maps/ reskin of maps I would love to mess around in with friends, as well as old versions of maps I would love to play again in a custom (Harford base for one)... we have also cycled through many custom maps for events, such as the wild west event... and now this weekly event pertaining with the stadium... the map reskins and custom maps made for events have a lot of work put into them and draw in new people who play the game. if given access to older maps/reskins that isn't playable anymore as they were taken out or were for a specific event I bet the player base for the game would skyrocket, as it would give players what they want keeping them coming back for more... such as 1v1's on wild west... hide and seek on the reskined theme park. and even 5v5 custom tournaments on this new map that was implemented... I would even buy the extra maps/reskins to play in custom, as long as only the host needed to buy the said map/reskin for custom.