Messenger 6.2 works very well for me. I wasn't expecting anything amazingly new about this version, and certainly didn't think we would see animated display pictures. As Cookie pointed out several times, only rumours about these were circulated, to the point where people started to take them as gospel.
The auto replace icon thing annoyed me at first, but now I have come to find it rather useful. I haven't mistyped an icon at all while I have ben using it.
I don't think that 6.2 removed anything that made 6.1 good, so all these people saying that 6.2 is crap and they have gone back to 6.1, ask yourselves, does not having an animated DP really mean that much to you??
