Hello All.
There appears to be a limit of 2140 defined classes in the modding interface.

Players, fences and storage are all network visible from 1000m away. If someone has an ESP or Radar they can see all your players equipment from that distance.
BE does a reasonable job, and people can now hack on PS4 BTW, although its rare.

What Amadieus said.

I believe this is intentional, as the wooden crate provides the same number of slots as it takes up itself.
Most backpacks and clothes provide more than they take up.