Cool article! quote below:

I was told the Fantastic Four will be shown as existing in the past alongside Michael Douglas' Hank Pym and Michelle Pfeiffer's Wasp, meaning that they have been a part of the MCU since the beginning.



Over a year ago, longer, I had this idea myself. A story that retro introduces and explains why we haven't seen them.

My idea runs like this:

As part of Shield or whatever, they launch in November 1961 (of course!)

Since its retro, perhaps we can go back to a version of the original story - they're trying to reach the moon possibly.

But they find the moon already inhabited (duh!) - - by the Inhumans.

My story does a reverse of the classic story. Instead of FF revealing the Inhumans

Inhumans reveal the captured, frozen / suspended FF.

How they awaken and get away is another idea all together. But using Inhumans to 'pilot' the FF.