Well you would not get everything unfortinitly. There are many parameters that you just can’t get at and that would stop the scene from loading the way that it was created. Also you would have to take into consideration ever controller and what it might be dependent on. For instance what I have posted here doesn’t take into account if an object, modifier or controller is an instance of another. Or what the expression is in a wire parameter.
So it would take a lot of doing to even get close to reproducing the file. BFF is as close as it has come so far and Im sure Bobo could make it just that much better each version of Max but it will always miss things that you just can’t get at. Lofts for instance can’t be created in Max script so you would have to colapse them when writting it out.
It would be fairly easy to write your own exporter that stores extra information like modifiers.