1 - impossible. I would hate Naruto, if he would end up with Sakura, after being friend zoned for so long.
2 - very realistic, next uchiha generation, not matter who is mother Sasuke would still love his daughter
3 - not quite as I expected, after all shit Sasuke did to Sakura, but I'm ok with it
4 - my favorite pairing since Naruto part 1. True loving family