The Era of Ultron

How is Age of Ultron different in a universe where Peter Parker is Wanda and Pietro's little brother?This is the rewrite of my old "Age of Ultron" fic with greatly improved writing skills (so spoilers there if you want them).Four years ago, the Maximoff's were offered a permanent place to stay, warmth, food, and most importantly, medicine. However this came with a price. The scientists at the base wanted to run experiments with the twins using some sort of gem they had come across. Wanda and Pietro initially refused, not wanting to leave Peter completely alone should something go wrong. However, they changed their minds after Peter had fallen deeply ill, and they desperately needed medicine. Her and Pietro had made Strucker promise that Peter wouldn’t be involved in the gem experiments, and it worked out for a while. However, after an accident in the lab, all three Maximoff's possessed incredible powers.