As a way to balance throughput and yield, I recycle biter eggs until they're rare, and only then upcycle them as productivity module 3s. That creates a need for rare / epic circuits though, which legendary upcyclers don't usually provide, so I made this. It creates a mix of rare / epic green / red / blue circuits in red chests to help packaging rare / epic biter eggs.
It can be reconfigured into producing legendary stuff with a little effort. Not as effective as a dedicated upcycler rig but compact and tileable.