There should be a ranked Skywars, Eggwars. Seasons start and end... You could make it so that you might need a minimum amount of wins to enter. Players start with 0 Rating. As they win games they get rating. For example, people with 100 rating go against people with similar rating. After the season ends top players get rewards and everyone starts at 0 again. I would try start it off with only solo, making it so there are no parties, no teaming. Other servers have this and it has worked great for them!