My main recent annoyance is that they removed the mentions tab on mobile, and replaced it with some weird feature called stage (some sort of clubhouse ripoff where you do... livestreaming?) It placed the mentions in under the search(?!?!) tab, which adds 2 clicks, and also added significant time delays sometimes when the search tab has to load for 3-10seconds........ I have a server with lots of discord "OGs" back from 2015, and it's the most complained about change that has been discussed in that server, by far.