After setting on this for a day. I think the whole multiverse aspect will be brought in, but I can't believe they'll make this version of Mysterio a 'good guy.' Have to think he'll be full of **** and is creating all these monsters to be the 'hero.' I'm positive I'll love it b/c there really isn't a Marvel movie I hate, except maybe The First Avenger.Putting this here because it has massive Endgame spoilers:
Count me as not excited about the multiverse, unless they contain it to Spiderman. Things can get waaaaay too complicated waaaay too fast.
Also, now every time I hear multiverse I'll think:
I do think it'll open up the idea of multiverse which would allow them to easily bring in; X-Men, Fantastic Four, etc. easier than to say they've been here the whole time and didn't help against Thanos b/c they suck. I've heard rumblings of potentially it tying into a Spider-Man Multiverse which would annoy me at first, but could be awesome if they somehow bring in Miles Morales' character in with Peter Parker. Hypothetically, if he avoided the snap in his verse, they'd be same age.
Lastly, there was apparently an obvious quote by Peggy Carter talking about Captain Britain, which I completely missed initially. Hopefully catch it once I get around to my rewatch.