I had a chance last week to talk to Brian Jones about the proposed dispositions to the DIS 29500 comments. We discussed the thinking behind a few typical dispositions as well as the business case for custom XML support and other Open XML topics.
The video is now live on the OpenXML page on YouTube. It's split into 4 parts:
How to deal with the comments
custom XML schema support
Ecma TC45 dialog with national bodies