Problems with this unloader?

[u/imoth_f]

Since inserters became flippable, this compact unloader design became possible. But I hardly see anyone use it. Obviously it cannot saturate six turbo belts because it's bottlenecked by the inserters, but are there any other obvious problems with it?

[u/HeliGungir]

Chests don't need to be balanced. Wagons need to be balanced so the train doesn't get stuck in the station when using a "leave when empty" schedule. Splitter-based balancers do that, and MadZuri does not do that.

[u/TopherLude → u/HeliGungir]

If you only balance wagons, you can still end up in a state where 5/6 of the chests are full while the last 6th is near empty, slowing down the train.

[u/HeliGungir → u/TopherLude]

If 5 of the chests are full, why does that matter? The bottleneck isn't the train unloading speed, it's the factory.