You go from children playing with and referencing real world pop culture products because that's just sort of how you evoke childhood from that era... to the utterly ludicrous and cringeworthy scenes with the mall in 3. Plus, the completely insane Soviet subplot that now looks like it's going to cannibalize the entire goddamn series. I mean, you had Soviets building a full underground super-base in the middle of Indiana on a site that already has the US government crawling around it. That's the kind of thing that contemporary Reaganite anticommunist cranks would put in contemporary propaganda to encourage witch hunts for fifth columns and spending another trillion dollars on tanks, in something that's supposed to just be using the 1980s as a backdrop it just completely shreds any suspension of disbelief. And then there's the fucking trailers that seem to show Hopper in a Stalin-era Gulag in the middle of Perestroika.