I tried Zulip for a small org. Used their hosted version since it’s quite generous for nonprofits. I personally liked it, but I was very much in the minority. Most of our people didn’t like it. I don’t think anyone articulated very well why they didn’t like it so it’s hard for me to characterize it other than people bitched about the UI a lot. I personally think it works fine, just be ready for some pushback.
We also tried Mattermost, and the uptake seemed a little easier. If you’re used to slack, discord, etc., most of them are pretty easy to transition to, but if you’re dealing with people that never used a real time chat platform, all of them (even slack) are like pushing a rock uphill because people can be impressively resistant to sensible change.






I’m lazy. I just want things to work. So in your shoes, I wouldn’t go trying to create work if things work fine.
I run Debian on my home server and my VPS, but I chose it for familiarity and stability. I wouldn’t say Debian is inherently barebones; you can add/build whatever you want. It is a longstanding, capable distro that is the base of many other distros. It’s a solid choice that favors stability. And if things are working with Mint, why break them?
By contrast, I run CachyOS on my laptop because it’s a newer laptop and the rolling release model of CachyOS (and Arch, which it’s built on) gets the updates and hardware support I need to make my laptop work. It’s simpler, better, and less work, and significantly more functional than it’s be with Debian, because the rolling release distro moves fast. My home server is 10 year old hardware, so the more stable Debian is fine.