As with other, I really enjoyed this season once it got rolling. The first 2-3 episodes were awfully slow however.
As for nitpicking the show I won't worry about plot holes. Instead I'll talk about hair. What the hell is with the hair on Will and Mike? Even Dustin's is very atypical of that era. Nobody in 1985 had a bowl cut or whatever the hell quasi-bowl cut Mike has. I think the Duffers are confusing 1985 with 1975. Billy looks like he's straight out of the late 70's. Even Harrington is iffy, because they don't make him "New Wave" enough for that hair. On a plus note, they nailed Eleven's restyling.
Mid 80's were peak preppy with mullets, post punk and new wave mixed in. Hoping Mike and Will gets a proper short, preppy cut and Dustin turns those curls into a mullet.