any additional Proposals on UA requirement to handle exceptions

As discussed on today's teleconference, we'd like to finalize the list of proposals for issue-151, but there was a bit of confusion today about whether the two we had (a. no text; b. mark feature as optional) were sufficient. The chairs have asked for any additional proposals by tomorrow (December 5th), which you can email to the group (this thread is fine) and add to the wiki here:

  http://www.w3.org/wiki/Privacy/TPWG/Proposals_on_UA_requirement_to_handle_exceptions

I personally had thought we were already very close to consensus on this issue (and only needed two proposals), so apologies if I misread us.

Thanks,
Nick