You make it seem like we spam announcements for every event.
The way my pattern goes is:

1) <eventname> @ EVENT CHANNEL
2) <eventname> starting in 1 minute!

Eventually, if there are not many players

3) Last call / Join now / More chances to win if you join early / Late join is off / Double points / some funny sht
and perhaps <eventname> is still going on.



Regarding Bunny's reply on Castiel, it's a good example of what the ETs shouldn't do, but I can vouch that Cast has understood the issue and stopped with the 'sixth call' announcements.