Base Gate Mechanic Suggestion

I feel if you control the enemys base you should be able to use their base gates only if you kill a minimum of two inhibitors. For example if you destroy both mid and top, or mid and bot inhibs the gate inbetween those destroyed inhibitors opens up for your team to use. I feel your dominance of the game/enemy base should have some perks. And make the enemy gate close when one of the two inhibitors are about to re-spawn maybe ten to twenty seconds before the inhib respawns. Thank you for your time and contribution to this community!