Will everyone please calm down.
Disney didn't buy Marvel to make all the characters wimpy. They bought them to make money.
What you'll wind up seeing is even more of the characters. Disney doesn't know how to reach boys, but they do know how to make cartoons. You know how DC has made a few good Batman/Superman TV cartoons - maybe now we'll finally get good looking and well written animated Spidey and X-Men.
Nobody has done justice to the Fantastic 4 yet whether it has been Herbie the Robot or two awful movies. Never mind Thor, Hulk, and the under-served Captain America.
This will be a good thing long term. Relax.