I also get constantly disconnected from chat. Messaging people that fail to X in lobby is now an even more annoying chore since, as @JaggedAppliance said, you have to first get on #aeolus yourself half the time, and then you might discover the player in question was also disconnected and it was all a waste of time.
Aside from that, the biggest annoyance for me as of late is that the most recently hosted map is no longer automatically highlighted in the map list when you host again. Before this change, rehosting was annoying enough, but now there's the extra hassle of remembering which random map you wanted or trying to find this needle in the haystack of inferior maps you created before settling for it. Extra annoying when the game crashes on launch and there's not even a 1 second replay to copy the map name from. EDIT this is fixed now. thank you.