Looking at my 2 theatres, one is brand new the other is going on 20 years old. My newer theatre already has a second layer of stuff added to it, such as new circuits, backstage monitors, stuff that was not included in the initial install. My older theatre has probably 4 or 5 layers of stuff added to it, some of the new layers are to replace layers that were added before. IE, 2 different sound systems installed. I have 3 different versions of clearcom, 2 that no longer work. I also have 3 different version of backstage works, once again 2 that no longer work. So... How many layers of things do you have in your theatre that were installed after the initial build?