I'm a DistroThinker

I'm not a distrohopper, because I've been using Debian for two years. But I'm always thinking about switching it. What makes me happy about Debian is its stability. However, as a developer, I want my applications and cli tools to be up to date. I install them by adding third-party repositories. But, this worries me. I'm afraid my system will break one day. So, I'm thinking of installing a disro and installing the applications and cli tools as sandboxed like flatpaks. But flatpaks are only for desktop applications. There are snaps for cli tools, but I don't like them. I also want my kernel and Nvidia drivers to be up to date (I use the Nvidia Debian repository). The Universal Blue distributions seem to be the ones that fit my needs best, but I don't like the immutability.

Does anyone have any suggestions (other than not thinking too much 😅)?