I suggest to split up the tournament thread into two parts: Here one could write non-organizational stuff, so one could leave the other thread for organizational posts.
I tried that in 2016. didn't work. people kept writing stuff in the wrong forum, and it was just too much of a hassle.
For important organizational stuff (like new rounds), I use the news page, and possibly the first post. if I'm not posting a piece of news in there, then I consider it not particularly important (like inverting two maps: doesn't really affect people, as they are going to play the maps anyway, and every round pairing specifies the map)