An Important Thing Missing for Season 2016 Update

One of the things I have identified that is missing on League for it to be my favorite game, and up to the level (or above) of the other games around, now that they're tackling the season 2016, is the custom maps feature. Giving the flexibility to welcome the part of the community that enjoys random maps (especially for those who come from warcraft 3 TFT, you might remember Sheep Tag, Angel Arena) would add great value to the League of Legends.