I gave Manjaro a shot recently and Bluetooth was 90% unusable for anything but my mouse. Keyboard? Nope. Headset? Nope. Other headset? Nope. Bluetooth speaker? Nope. Unfortunately, it is a brand new Intel motherboard, so I can’t even get WiFi as athk12 or whatever isn’t really done. I was shocked I could get bluetooth to work at all. Sound wasn’t that great through a USB headset either, but then I could at least hear people. For me, I can really only use trackballs now and the USB port on the mouse is for charging only. Bluetooth compatibility is very very important to me and it still being shitty on any system in 2024 blows my damn mind.
Only other potential issue would be something with how Proxmox is doing passthrough, but I had just as much trouble pairing with Debian underneath through the terminal as I did with the Manjaro VM. On another note, the GPU passthrough is amazing and I had a good time playing games for the first time on Linux. This machine was never intended for gaming, but I thought it would be fun to take a server to a LAN party. Sliger case for the win! Just a 3U.