Woot! Miles is pretty epic and will love to have another Peter around. He admires his/not his Peter-Dad a lot! He was there when the Peter from his universe died, of course (as you know), so there's some guilt there.
Yeah, Carol would laugh at the notion since she's close to another Peter Parker, but couldn't see herself dating him. Definitely, love the awkward chemistry that might spark up! Though, she's going through bit of an identity thing right now if he talks about it. She'll have questions.
Haha, Kenobi will hate you for it. Please do!
YES!!!! BRING IN 11! We have a River somewhere around here, so it would be amazing! Plus Rose would have a great time with it, and 13 can introduce them and they can go on wacky adventures together and he can join Genius Club!