I was able to find my savegame with silo experiments and share screenshots of this pattern.

balancer pattern
https://images.steamusercontent.com/ugc/13255508397698024257/148C8EA809B58396EFE8455E387A2A8C07E6BA7F/
2*746 iron sticks/second to 2 wagons

upcycler pattern
https://images ...

good point with spoilable items, outputing them should always be possible.

my intention of nerfing silos is same as nerfing space casino. you can skip the parts of fiddling-process by using a building that probably serves a different purpose to a purely ground-based logistic-hub.

Direct load is limited by the size of the foundy. You can load 1 wagon directly with 5x120items/s or 2 wagons partialy direct with 3x120items/s each. Aligning foundries symetrical to wagons also limits the throughput per wagon and the available space for the foundry-input and beacons. Direct load ...

The rocket silo can be used as big container with 36 inserterslots IN+OUT. You can skip balancer-mechanics and many logistic-problems that way. Please check if this is intended. Chaining rocket silos also works. 1 Foundy can output up to 840 (7x120) items per second to one silo and distribute it to ...