It's looking freaking gorgeous. Tentacrul is the bomb. His work on MuseScore is arguably the best UX/UI in the FOSS world. It even beats most if not all of the proprietary alternatives in the same category.
Signal is centralized, contains binary blobs from Google and requires Play Services. It's just wrong on many levels.
Matrix is better but with it's own controversies. I have accepted that XMPP could be a better choice than any other, provided people get the guidance needed to chose the right client for them.
Please for the love of god make a Ublue core image with Proxmox VE.
I want my server to be updated, unbreakable and easy.
Ublue Core with Cockpit is not easy. It's hard AF.
Selinux is a PIA for noobs, Fedora docs are noob unfriendly. And the worst of all, there's absolutely no community whatsoever for Cockpit. If you want a tutorial then good luck to you. While Proxmox has a gazillion tutorials popping up every single day.
You could also ship a Coolify installer as a ujust script. Same thing with Tailscale (already available) and Cloudflared.
PVE & Ublue together, it would be a dream come true.
Edit: people are suggesting Fedora Core OS as a base, but Ublue Core builds on top of it. And for you it would feel more familiar since you already worked on other ublue images.
If it ends up being usable, I bet the Ucore team will pick up on your work. PVE's popularity just can't be ignored, it outmatches Cockpit by too much.
Hey, I've been using it for about a week on Bazzite and I'm really enjoying it. Great work.