Not to piss on anyone's parade, but given it's merely a rumor, I'm guessing that site pulled some speculation from elsewhere--I remember reading a recent article where people were saying what they'd LIKE to see on Netflix and those heroes came up. I worry someone else took that for possibility rather than a wishlist.
It'd be cool to see those heroes--and more--but I'd also worry about them biting off more than they can chew. I'd like to see the Defenders come together and the new Cloak and Dagger -- and of course *wishful thinking* Agent Carter brought over -- before they start bringing in bunches of new shows in earnest.
It wouldn't be the first time rummors were leaked/started to influence negotiations. *Eyes Deapool trailer*