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.
Vintage 5362 IBM System/36 Mini-Computer Mainframe 5291 2, CRT Terminal DM12N501
$249.99
IBM Type 4869 External 5 1/4in Floppy Disk Drive Mainframe Collection - UNTESTED
$65.00
01KU751 IBM Z14 zSERIES MAINFRAME SUPPORT ELEMENT 15.5" DISPLAY UNIT
$225.00
Lot of 2 Vintage DEC Digital Computer Mainframe VT100 Keyboards Untested
$239.99
Vintage Silicon Graphics SGI Indy B006 Workstation Computer
$149.95
6 Vintage Computer Tape Reels mainframe 3200 5000 data ibm magnetic processor
$99.00
8 - VINTAGE MAINFRAME Fortran Format Punch Cards - IBM 80 columns
$9.99
Commodore Amiga 500 Computer w/Mouse and Amiga A520 RF Modulator As Is Untested
$299.99
Vintage 1960s Donner Model 3000 Analog Computer ~ MUSEUM PIECE Extremely Rare
$4000.00
Vintage 1985 IBM 5291 2 X2790 8520850 System/36 Mini-Computer Terminal Base
$79.99