I don't mind memes in the chats, as long as they are on-topic and don't get too spammy.
Re: recent changes- I think the specific tags are huge. I was always offput by Slack/discord channels that spam @everyone and @here. Especially if it is content I'm not opted in to be interested in. The reduction in channels I like, mostly because TS liked being in a slim portrait shape on the far left of my screens and Disc just doesn't look great to me in anything but a more landscape aspect ratio. All that to say, I was not enjoying scrolling through all of the previous channels. Now it's clean and I can expand the channel trees I want on one screen. Having to clean up channels is something to get used to, but nothing more. Overall, Disc is pretty useful and the in-game control is very nice too.