There's probably a few things you can do live on a call.
I always wanted to try passing a common function through a minifier then a beautifier. Show them the code with unhelpful variable names, and ask them what name they would give the function.
A good programmer would be able to identify a string compare function or an IP bitmask eval function pretty quickly.
That area should hold about 400 people, not 40,000. The trees won't survive unless they can see the sky.