Yep, I'm not annoyed, just being emphatic about what we want to see. :-)

I'm one of the developers on the Launchpad team. A user identified as "leni" spoke to us about this on IRC last week; it so happened that the Launchpad team were in the middle of an in-person sprint at the time, so we were able to discuss the problem fairly quickly and put together a plan to improve our API. I implemented those improvements shortly afterwards. They aren't quite deployed on production yet, but they should be very soon. Unfortunately I don't have any contact details for leni unless they happen to join IRC, so I'm posting a summary of the discussion and my improvements here, which is probably a useful thing to do anyway.