In my opinion Hickman has great ideas but he can get confusing at times, the "Infinity" crossover is an example: too much happens at the same time and at moments there's too many characters to keep track of everything, he reminds me of Grant Morrison (talented guy but can get confusing at moments).
The "Incursion" storyline he started in his New Avengers run was neat, but it gets too loaded to keep track of it.
Secret Wars feels more focused, almost all the main story focuses on Doom and he even shows a human side of him, i thought the story was going to be a complete disaster but i gotta admit i'm enjoying more than hating the story, the only thing i dislike is the insane amount of crossovers but i guess no one is forcing me to read them all...