From the code i extracted this information about a mod:
- Chests are incredibly large 10k, 30k and 60k
- Underground belts are 250 tiles long (dont know if it works tbh)
- Biters have imense amount of health 100k, 10M, 1G
- Beacon have supply area of 64 and slot count of 600
There is atempt to make faster belts (but it is just comment cause belts can't be faster than 475 +- cause of factorio engine) and then something with tree health.
Hope this helps :D