I'm not subscribed to this list, but Christian Grobmeier pointed me to John's post about how OT and Wave could be relevant to OpenOffice.
I wanted to mention that the idea is being discussed, but at the standards level. The default document format for OpenOffice is Open Document Format (ODF), which is standardized at OASIS and ISO. (I chair the committee at OASIS). We're currently working on ODF 1.3 and as part of that we're adding a new change tracking mechanism based on OT. This is the traditional asynchronous change tracking that office suites have had for years, but modeled on OT terms. And, although not specified at this point, we're also aware that OT enables more interesting modes of collaboration, including synchronous/real-time, co-editing, etc. That's the main reason the OT approach is attractive, is that we can have a single model that will work for change tracking as well as co-editing. Once we get the standard side of this elaborated in more details, then the next step will be to get it implemented in Apache OpenOffice as well as the Apache ODF Toolit (incubating). But the pace of standardization is slow, and I wouldn't expect this before 2014. Regards, -Rob