Now i see...you "place" spawn points around your village, and simulate attacks at the push of a button...
Hmmm...It's not my most favoured preference of all, but good for a "sandbox" sort of option but...it seems to fake for my tastes.
How hard would it be to have different enemy types, randomly out of seemingly nowhere, attack your settlement based on how "good" it is? In essence...number of workers, supplies, technology researched etc, from everything from molerats and dogs to deathclaws and gargantuans! (Or maybe even a mixture of everything at once!)
I was thinking of, say keep the placeable spawn points (maybe allowing further range, possible up to 10 or 20000 units from your "centre" as 3000 is too small), but leaving the "attacks" as purely random.
If the mod was modular enough I guess this would be easier...although the scripting required to make it based off city level in conjunction with spawn chances...not to sure how it would work on the fly, say if 1 represented 1%, with each significant city upgrade alter from 1 to 3/5/8/13/20% chance etc for each enemy type, lower % of weaker types and increase % of stronger types as you tech.
But whatever...just another thought for you.
What (if anything) have you got planned for the next release so far?