I'd like to see Marvel Studio's wrap-up the Stark angle for this version of Spider-Man. Give him his own lab where he develops his photos and maintains stripped down versions of the Stark suits and where he can keep his web shooters and other Spider-Man paraphernalia maybe at a place also roomed by a few other famous room mates (who help pay the mortgage or rent for the upper story loft for the most part as they're fellow hero's) as Peter goes through his studies for college.
Post-Marvel Studio's Appearances per current contract with Sony, Parker could take some of his equipment to the Bugle (say a 3D printer for instance) only to take it home and have it acting all glitchy... Too much ink on a black stripped down suit that Parker hangs up to dry as he closes the door and a black puddle collects on the floor under the suit. Next day, Parker notices a frustrated yet frantic visitor from another newspapter at the Bugle looking for something named Eddie. He spots Peter and asks him if he's the kid he remembers from a school newspaper correcting a bunch of things in a article he wrote many years ago then comments to Parker have a nice life as shoulders past him still distraught as if left something.
How would any of this work following the ending of FFH, though?
If Kraven is the villain and is indeed Wakandian, I would love for Shuri to team up with Spidey. BP is too big of a character now to be in a supporting role (outside of the Avengers movies), same goes for Nyong'O. Okoye was my favorite character in BP, but her working on her own (even if it is to capture a Wakanda fugitive) seems kinda against her established story. Plus, having Shuri on her own would give her more time to be in the spotlight. If MJ has a bigger role this time, I can see her both feeling inspired and gaining confidence after seeing what Shuri is capable of. But also feeling jealous of her interactions with Peter, as a comedy relief/gag. The only problem is I don't see T'Challa letting his little sister do something like this.
As some said before, Daredevil would be awesome. I know many people says he'll need a lawyer, but remember he's still treated as Stark's protégé. I think Mrs. Potts won't have a problem getting as many lawyers as Peter needs.
Still, we saw in FFH Peter has been fighting mobs. No doubt they'll want to get rid of Parker, and Murdock has plenty of experience fighting them.
If Sony does involve Venom into SM3, then why not Ant-Man? Or the Wasp. Or both. They all live in San Francisco. Hell, I would love a female Avenger to join Spidey and make it a little different from the two previous movies.
The Wasp herself would be a great option. Say Scott is on a trip with Cassie and have Hope giving Spidey a hand.
Wanda will already be too busy in 2021 (although Fury did appear in all three marvel movies this year so I guess it's not impossible?). A little too soon to introduce the new Black Widow. Captain Marvel is way too powerful for any Spider-Man villain. I love Valkyrie but it'd make zero sense for her to be there. Pepper would doubtfully wear the Rescue armor again. Jessica Jones would be great, but I don't see any reason why she'd want to help a teenage hero. But in the unlikely scenario of them using a character from the TV shows, Quake would be helpful and easy to introduce to the GA.
All that being said, we didn't get another superhero in FFH. So, maybe something similar could happen this time? Agent 13, maybe? Or even just Pepper Potts giving advice to Peter (with the on screen return of Morgan)?