best practice system setup and some concept ideas - /root (OS) /home (data) re-play changes and and /etc/config after re-install with new distro version?

[dude <forum4@dwaves.de>]

Hello Dear Debians,

what is the best practice for easy update & dist-upgrade:

1. in terms of speed and easy of distro updates, it makes sense to separate
• /root (software (programs) that can be re-downloaded) (on separate single suepr fast SSD or NVMe)
  
• /home (non-reblacable unique data (massive amounts of space with 8x4TB software mdadm RAID10))
2. when a new Debian 12 is coming out
• how to re-play all those changes, installs, configs and programs made to /root?
• mergo changes from a git repo into (also changed/updated by distro) config files?
• and just pray it works :) (it will very often work :)
3. if things go wrong there is still this nice "show me all changes to logs in beautiful colors" one liner
• (ccze is very much needed also in Debian 12 :) (tried many alternatives)
  
• find /var/log/* -type f \( -name "*" \) ! -path '*.gz*' -exec tail -n0 -f "$file" {} + | ccze

would it be cool if such a system was already "build into" GNU Linux Debian?

Like:

1. install a very basic Debian 11 template
2. apply all changes (all changes will be recorded to a separate partition (!?) or a local git repo!?) and saved as a "config snapshot" that can be re applied as soon as Debian 12 template is released :)?

just an idea :)

to automate those updates :)

(which with very basic systems with basic services just work (mostly) flawlessly thanks all involved :)

best reg