The Debian-Live approach also provides some good opportunities. First and foremost, the very easy remastering makes it efficient to run with no persistent store quite often. For instance, upon remastering, I just start without the store, and the image I run is union-mounted with the persistence file and copied&compressed. Then I have to boot something else to copy the new squashfs image in place, but that's all that has to be done outside the system.
Boot the new image without persistence, create a new persistence file.
For further adaptations, the new persistence file can be mounted in an instance run under kvm, programs can be added and settings tweaked for an eventual new remastering.
Storing the series of squashfs-compressed images, one can always go back in this process if needed.
Lenovo ThinkPad x250 12.5" Touch Laptop Intel i5 8GB RAM 128GB SSD Windows 10
$85.50
Lenovo Laptop ThinkPad Light Gaming AMD Ryzen 7 PRO 16GB 256GB SSD Windows 11
$279.99
Lenovo ThinkPad T495s Laptop AMD Ryzen 7 PRO 3700U 8GB RAM 256GB SSD Windows 11
$249.99
Lenovo ThinkBook 15 Gen 4 Notebook 15.6" FHD AMD R7 5825U 16GB RAM 512GB SSD
$529.99
Lenovo ThinkBook 15 Gen 4 Notebook 15.6" FHD Intel Core i7-1255U 8GB RAM
$544.99
Lenovo - Legion Slim 5 16" Gaming Laptop WUXGA - Ryzen 5 7640HS with 16GB Mem...
$949.99
Lenovo Legion Pro 5i 16" Gaming Laptop RTX 4070 8GB i9-13900HX 16GB RAM 1TB SSD
$1369.99
Lenovo Ideapad 1i 15.6" FHD Touch Laptop - Intel Core i3-1215U with 8GB Memor...
$329.99
Lenovo Thinkpad T490s Core i7 8665U 16GB 512GB Touchscreen Windows 11 Pro
$289.00
Lenovo ThinkPad T480s Laptop Computer 14" Core i5 8GB RAM 128GB SSD Windows 11
$208.99