I'll send in the small list I have after the weekend; if you've got anything to add to it, let me know!

I assume the server has a delay on refreshing comm.channel.players, since requesting the data on prime, then moving into a manse does show everyone gotten on prime through WHO for a bit and then stops doing so. How long is this delay? I'm writing a module that requests this currently at 30 second intervals, which would be a waste if it gets updated only once a minute.

All I know is that Nexus updates once every 40 seconds; try that number and see if it makes a difference.

EDIT: Or possibly one minute. When I sniffed packages today, they came after one minute (aside from the first one). Could've sworn it was 40 earlier, but I might've misremembered...

Seems there is a difference between the update while on the same plane, and the update when changing planes (looks like it needs a full minute after changing planes). This is tricky to test though. Sior, could we get an official kind of answer?

When you enable Debug mode in Mudlet, it'll show all arriving GMCP events realtime within the mud stream... that might help you see it better.