PROJECT CLOSED - see Fossa64-Basic.
When Fossapup64-9.5 was released, creator 666philb made the adrv removeable, leaving a skeleton system.
From that, I decided to try to make a small usable system for older pcs to have basic functionality, Fossa64-low v1-6.]
Fossa64-med v1 was a composite iso, with some fixes, and most of my .pets included, with medium compression. 272mb.