Well since I could not find one I wrote a simple console variable value and spew tracing system. This is of course a developer project and is not overly polished.
This system consists of two parts:
a win32 console application called GE Console and,
a game editor global script file called trace.c.
The win32 console application must be run from your game editor project folder, not the data folder. This is because GE Console looks for the spew trace file trace.log in the same folder where it resides.
All you have to do with trace.c is add it to your game editor project. There are a couple of tutorials here that explain how to do this in game editor.
The accompanying zip contains these as well as an example and a document describing their use. Basically this allows you to see the value of variables and timing that functions are called interactively while your game is running.
The example game editor file shows a couple of actors that write info to the console or clear it when clicked with the left mouse button.
Good luck and I hope it helps.
Kelly