Fantastic Four is not about body-horror. Dr. Doom is not part of their origin. Or shouldn't be.
How many times when an X-Men movie is released some one says "This is the real beginning of the X-Men" like it was every time before.
The Nolan Batman films were mostly good, but wrote a realism check that half of Batman's mythos cannot cash (even Catwoman felt silly in the third one), and new DC filmverse can't decide whether it wants to deposit that check or tear it in two.
Deadpool seemed to work, they didn't muck him up too much...the second time (X-Men Origins Wolverine). I say seemed, because I'm not that familiar with him.
Studios hiring talented, up and coming directors then getting cold feet and re-edit the film, shoot new scenes, etc.
In regards to Leto and Suicide Squad, I don't know how much of a report of a report I believe. There's so much crap piled on the film.