2) Spider-Gwen
The great thing about Spider-Gwen is that she hails from an alternate reality, and in that world, she was the one bitten by the spider, while Peter Parker ended up transforming into The Lizard and dying shortly after.
The fact that she wouldn’t be part of the Marvel Cinematic Universe gives Sony a lot more freedom to do what the want with her, and so it’s entirely possible that they could bring back Emma Stone to play this version of the character. Of course, that does risk confusing some moviegoers, and there’s really no reason why the MCU’s Gwen (if they’re planning on introducing her) couldn’t don a costume and take on this role; after all, recent comics revealed a young girl called Cindy Moon was bitten by the same spider which gave Peter his abilities, so sub Gwen in for her, and it would be easy enough to introduce Spider-Gwen.
A firm fan favourite, a Spider-Gwen movie could end up doing really well.