I have. Granted it was around 5 years ago so things have probably changed, but it was around the time they were launching the XBox arcade dev kit and they seemed very genuinely interested in indie dev and supporting communities.
Meat Boy certainly seemed to come about in that kind of positive environment.
Not saying that I'm 100% confident that MS won't mess up Minecraft. I've never played it, but have always enjoyed following Notch and his epic trip with Minecraft as I was once a starry eyed indie game dev. I also have a young child who I know will be into it. Everything I've read seems like Minecraft totally failed to learn from id software and valve when it comes to modding. And still Minecraft mods are massive.
It blows my mind. It also makes me think that MS would have to try REALLY REALLY hard to mess it up. If Minecraft has been a success with all the hurdles so far, I figure it is basically an unstoppable cultural entity now.