This could be an useful option for hosts - You may want to have the game start very quickly if everyone has good internet connection or good PCs/laptops, and if you have friends or other people with weaker connection or machines, you could increase the waiting time before the game starts or before the customization menu disappears. The minimum time could be 30 seconds like it is now, and maximum could be say, something like 1 minute or 2 minutes. This would be displayed in the same area as gameplay mutators or somewhere else. If you don’t modify the time, it would default to 30 seconds or some other value the developers could choose. An example graphic for the server browser implementation:
