i dislike horizontal tabs, so i go with sidebery / tree-style-tabs. also use a lot of pinned tabs and they sit on top of the list of tabs. this way i can have ~10 pinned tabs and still remember what all of these are.
you can create them afterwards and move the stuff into the subvol. do it from a live usb and don’t forget to update fstab. be sure to use rsync with the flag to keep permissions etc
me too, but i will switch to arch or nix soon. not because it broke, just to have a frash start. after 3+ years i have a shit load of stuff i don’t really need anymore