I don't believe in coincidences

Pirate and Princess//Wives.

How the show hints that Mike's story isn't over yet...

The UD "imploded" along with El, right before Mike's eyes. This was clearly foreshadowing...

Robin, the bird, got grounded/landed. Unable to fly... People keep using the phrase "stuck the landing" for the ending. Which is deviously clever because it sounds good on the surface, but the show keeps reiterating how important being able to fly is. Also the show’s “grades” definitely “plummeted”… they predicted this…. Lmfao.

This was the ending we got but...

THIS WASN'T THE END TO ROBIN'S STORY! THERE WAS MORE!!!

She found a missing tape! The concept of a missing tape is so frequently alluded to within the show and outside of it. Click the link for some examples of this.

Clearly these scenes are connected. Both Mike and Robin have a little version of themselves whom they look up to. This little version of themselves is brave and fearless!

Their inner child that accepts themselves for who they are before society tells them they should feel shame for being different.

Not to mention how both Mike and Robin have alter egos: "Rockin' Robin" and "Mike the Brave".

After finding the tape, Robin learns to stop being scared of who she is. She embraces herself and learns to fly once again.

I was fumbling around on IG and stumbled upon this post from the Duffers' official account.

I wasn't aware of it, so apologies if this is an old point.

Note the date it was posted, August 28th 2019 - I think this is significant, given that it's one of Will's birthdays.

Also Will is referred to as a spy several times. Mike even calls him a superspy.

A superspy like... James Bond? 007?