(I made a suggestion for this back in September, 2016)
I believe it'd be nice to have a knife throwing area since there's a shooting range. There's a difference between both weapons, so it'd be nice to have an understanding of how to use them just before you start the game.
This isn't really too complex, there doesn't need to be a completely new section to the lobby - instead, just obtain a knife and a gun when entering the shooting range.
Leave your feedback in the comments, especially if you have anything you'd like to add to this suggestion.