So the second ending weren't they mutants? And Magneto's children at that? Unless X-Men Evolution wasn't that canon but I'm pretty sure the boy is super speed and the girl is like Jean but hella unstable. Correct me if I'm wrong though.

In the comics, yes, they are mutants. In the mid-credits movie sequence, though, Strucker described them as the only two survivors of a series of tests they carried out using Loki's scepter. Quicksilver indeed has super speed, and Scarlet Witch can cast 'hexes', which can change the likelihood of things, like someone slipping, or a water pipe bursting under someone's feet. She's also a sorceress in the comics. In the movie, the only thing we saw her do was some telekinesis, so they may change her powers up.

And yes, Scarlet Witch is more emotionally unstable than Jean Grey, which, as you may imagine, is quite a statement.

Helicarriers and how they even came across as a good idea and so easily corruptible aside, Zola was dumb.... just dumb. So in the 70's they save his mind and consciousness into multiple old tape computers? Not buying it. Leave out Zola, hell leave out Hydra from this movie, for not one second did I believe that Pearce and Co. were Hydra, in any way shape or form. Having them mention "Hail Hydra" before they die and whatever bullshit that one guy was spouting when he fought Falcon didn't do it for me. You could've just had Pearce be the evil corporate head out for his own devices plot and did just fine. Even in the credit scene Von Strucker says something about "Hydra and Shield are pointless now." If you're going to bring back Hydra, don't make a mockery of it.

And I know I'm going to catch flak for this but can we just not have Scarlett Johnannson in this movie? Outside of looking hot she literally didn't do anything besides tell a story of how the Winter Soldier killed the person she was protecting by shooting through her. I just don't care for Black Widow anymore, Scarlett's star power gives her way too many lines.

there was someone who could do the covert "other orders" actions on board the Lemurian Star, but also to provide balance to Captain America. He's getting his footing in a strange land, so he needs people he can identify with. Falcon is one, but even he doesn't also provide the contrast in personality she does; he is an honorable person who is having to live in a dishonorable world, while she is just the opposite. Both of their characters are strengthened from their relationship, and this is the logical place for her to be after Avengers.

Plus, she big-sisters him into asking out Sharon, and he (let's face it) kinds of needs to be big-sistered (or at least, big-siblinged).