That a great idea for optimizing, testing and debugging!

Here is a related idea - how about an option to 'show information bubble' Say you want to test your crate, you right click on the crate and select "Show Bubble" and then select which of the crates properties you want to watch, then you see a small bubble above the crate with the values you select and you can shoot the crate, move it whatever and watch those variables.

Something like this ...



Or something like the do with troops in RTS games, maybe you could also 'Turn on Bubbles for these objects" and then just have a floating bubble with an 'i' over these objects you selected and right clicking shows the current variables you are watching for this object.