The current lobby for Eggwars is fine as how it is. Changing it will remove the "Eggwars ambiance". If you are refering to the waiting lobby, why should you even want to change it? It is a place where you will be at the max. 1 minute or a little bit longer. Also, there are 2 new parcours added to those lobbies really recently.
Changing it is unnecessary in my eyes.