I think you guys who are making the Mat files but want more support for the MC6 files are running into what we run into at work - how do we get folks to move on if we keep supporting the old methods?  Eventually, you have to say, I'm moving on and you can either move with me or get left behind.  Otherwise, the program's progress will always be hindered to some extent, as you're trying to foce new methods to work with old hacks.  At least, that's my opinion. 

I for one, am all for the mc6 revoloution and not just because I'm paid to be. I think it's all around a smarter way of getting things done and the ability to easily make your own without having to jump through hoops is nice.

That said, a gradual move is understandable but I wouldn't blame anyone for a hard and fast cut.