Mangos is great i won't like to see it changed as it is. i remember the first releases when 2.0 was out they where patches in the core modifecation section an long time before mangos inported it and it sould stay that way if you think you can make an patch so mangos can suport 4.0.x than do so and share it on the core modification section keep it updated and who knows maybee your patch will land up in the source when they deside to suport 4.x.
it always worked for me like that and im glad mangos do it that way becose than some DB projects at least can inport some stuff before it goes live on real mangos.
So when you think you can make an patch so mangos can suport 4.x then do so and share it in core modification section and keep it updated and so on.