New Game mode idea

Some friends and I were thinking of some game mode ideas and the most popular one was a king of the hill type game mode with 3 teams of 4 in the game and it being a circular map (hopefully in the Frejlord). The 3 teams in the game mode would be on the outer edge of the circle and there would be three lanes one mid for each team with no towers there but then on each side of you're base there would be the classic lane with two tier towers, an inhibitor turret and an inhibitor itself then nexus towers and nexus itself. then in the middle there would be a zone with one low damage indestructible neutral turret that attacks the other two teams if the third has captured it and a team has to hold it for 20 minutes to win but if the first team holds it for 5 minutes the second team comes and continues the timer if at least two teams are in the zone then it would be contested with the timer staying still. The game would end when a team is either the last team standing or is the one holding the hill when the timer ends. If team blue for example destroys team reds nexus than that team is not out but no longer able to re spawn, putting them at a great disadvantage but still giving them a chance to win. In between each lane there would be a jungle with creeps but no drakes or baron type creatures. The 4 roles would be right , left , jungle or mid.

Any comments, suggestions, questions would be appreciated thank you.