I've delete these groups:
SPEL (spell)
BOOK (books)
CONT (containers)
NPC_ (NPC package)
PACK (AI package)
^ AI and NPC referenced creatures like skeletons and mudcrabs that are in the mod. The rest are treasure chests, custom books and 1 spell.
while keeping these intact:
ACTI (activator)
Staic (static)
CELL (cell)
WRLD (world space)
WATR (water)
I'm not sure if more needs to go into this, but does that seem correct? Also for anyone else who did this, have I missed something?
Not sure why, but ESP before = 500kb, and when I saved the edited version it came out to 1MB.

