The ticket is currently pending review, so when someone has some time for Twisted reviews, you should get some feedback on it.  You might want to attach a comment that makes it very clear for a reviewer where the code actually is, since the ticket seems to have begun its life in the 'review' state; it's a bit unorthodox for someone to keep working on a ticket once it's been submitted for review.  The normal workflow is to have the comment that attaches the 'review' keyword be the submission for review, and the comment that removes it be the review commentary.  (Or something close to that, trac's UI is so hard to drive.)

We've got a bit of a review backlog right now so there may be some latency :-\.  Perhaps you should volunteer to review some tickets yourself? :)

The way to get from your launchpad branch to the relevant SVN-like diff is this:

bzr get lp:~lvh/twisted/positioning positioning-3926
cd positioning-3926
bzr diff -r ancestor:lp:twisted

Attaching this patch to the ticket may make  a reviewer's life easier; not everyone is equally facile with bzr.

This can be a separate ticket.