There was no single event that set the course for the entire season.

The events in Lester Nygaard's basement from S1.
The events at the "Waffle Hut" from S2.
(haven't seen S3)

All of those events happened in the debut episodes and
the entire season we watched the characters react to it.
In S4 of Fargo, things are just kinda happening.
While on it's own I'm sure it is entertaining to some degree,
(like Mynoriti said in the Fargo post, it's a regular mob story)
but it's not the same Fargo series.

I'm disappointed cause the debut episode of this season was amazing.