Dvd Virtual Machine status/debugger

I have been looking for a software dvd player (windows or *nix) which will display the
status of the dvd virtual machine.  What I have been doing is tweeking a few of the pgc's
of dvd backups I have made. Stuff like skipping decisions and directly setting registers.
The problem is I don't really have much of a debugger.  After exhaustive searching
on google, I haven't seen available, for any platform.  After taking a quick look at the
Ogle source.. I feel it might be a good place to start this hack.  What I really want
is something that will display the current state of the virtual machine in real time,
jump/call/link traces. In a perfect world it would have watches on registers, stepped
execution and the ability to force VM values at any stage.  Is any one interested in
such a hack? Is any else working on something like this?