Interlocking Conductive AA Battery Compartment

An AA battery compartment with conductive filament 'wires'. Designed to be printed on a dual extrusion printer.

This is as much a thought experiment as anything else, and I'm uploading to see if anyone has any good ideas to take it further - please comment and/or remix!

The concept was to print an 'all in one' battery holder that could be interlocked with the same design to build a battery compartment for as many batteries as you'd like in your project. However, there are some limitations