Here is something for you to bear in mind in light of the reality that Microsoft will never implement OOXML.

"We don't do a new version to fix bugs. We don't. Not enough people would buy it."

--Bill Gates (a lot more here)

For the record, this quote is not exceptional if you consider another one that we shared here before. Gates says the only aim is to sell more copies, quality being an unimportant or negligible factor. How can ISO ever rely on such an attitude? ⬆