And when they saw that Trank was screwing up. They just said **** it and "buried their heads in the sand".

Like wtf? For all the **** people give Marvel, Feige in particular. They step in when they feel they need to. Alan Taylor was an example of this and judging from Terminator Genesys, I believe they had every right to. Say what you want about Feige, but he's never screwed up as bad as Fox did with the FF. Their worst films (IM2, Thor 2) are masterpieces compared to the nonsense that was the FF.
It has been said again and again when marvel hires a director, there are certain ELEMENTS that NEED to be in the film because its a connected universe after all. For example, with the Russo's, Feige told them he wanted Shield gone/dismembered in TWS. That HAD to happen. How they got there was up to the Russo's but Shield falling had to be in the film.
FFINO is barely a film. People were saying "oh Rothman is gone, Fox have improved their ways" and they drop the FF on us.

How do you mess up the FF three times in a row? Dear Lawd. From the same studio that gave us X-2 and FC which are consider one of the creme de LA creme of the CBM genre. They literally took a major step backwards.