Just by basic character numbers (S1=16, S2=12, S3=8 main characters) we can see the quick decline in plot and conflict variation. To me it's so odd that many of the newly introduced characters perished their plot lines either in season 2 or 3. OG Shogun World crew were all blown to pieces for no good reason. William's daughter got killed on father's day. Eslie's comeback and death is probably one of the most devastating plot lines. Death is so overused to drive plot because at a conceptual level there's no impact of death. However, what enriched the first season was the life of the character itself, and this is absent on these two seasons. It's crazy how much of Arnold is left within Season 1 despite the character being dead. It's mostly filler scenes or feels like it.
I honestly feel that at a conceptual level the world building is correctly executed. Delos alt project, Military involvement, construction workers with robotic side kicks, the fake grand theft auto app, etc.
However, why not give also a clever solution towards characters living on this interesting world? All of the support characters are cookie cutter versions of the main character. Dubs gets reprogrammed to follow Bernard no questions asked, but retains a level of consciousness that's only relevant as comic relief. Caleb's friends are also low life characters with little to no background and what defines them is that they are low life people (or at least this is what sticks with the viewer). Delos had a board of directors we barely knew about, and they all get executed. This whole Serac vs the world felt so cheap. Everyone acting out a revolution due to the data leak was also cheap.
However, Season 4 can introduce other more competent humans. Also go back to the awakening of consciousness. Besides, there should be a more competent guide towards conflict between individuals and what makes life worth living or worth killing for.