I want to reinstall my Linux OS. Drive is formatted btrfs and I have subvolumes for root and home. I have two options:
1) remove the old root subvolume, create a new one, install and mount the old home subvolume, keeping files and configs intact.
2) backup, format, and do it all from scratch.

I've never done option 1 yet. I kinda want to experiment with it. But in keeping all old config files, it partly undermines why I want to do this in the first place. I want to clean up some of the old stuff that I've lost track of and I don't really know what I can/can't safely remove anymore.

Option 2 is straightforward in the beginning, but it leaves me with a lot of things to reconfigure. For some things I plan to backup and reuse old configs, for others it will be better to do it manually. But it will take time.

Thoughts? What would you do?