I think I may be over-thinking this. Could someone please confirm or deny whether I have things straight?:

- Compressing (recompressing?) and decrapifying are two separate functions. You can compress files without also decrapifying them, and you can decrapify them without also compressing them.
- Compressing files is non-destructive. Decrapifying them is destructive, and requires you to decrapify your save files, too, in order for things to work properly.