Yeah I don't know if it was so much Microsoft's fault as it was that of the developer and peer review process.
If someone claims a certain bug occurred, whether or not they can reproduce it, then it is grounds for an automatic fail. Because XBLIG has a "penalty" that is, cool off required to...
I've been hearing a lot of great things about Sequence as well. A bit of a different style game for the platform, but very well done, stylized graphics, and a well polished product.
It's developed by a very young guy too, I think he's only 25,
I was searching around on here and noticed that there wasn't much of an XBLIG presence. For all of the....how should we say......"mediocre" titles on the platform, there are still a few shining gems as well. Recent big changes to the platform by Microsoft have begun to drive new life into it...