I just got to the end of Season 4 and I really enjoyed. The front half with Ghost Rider and the Darkhold was solid - I liked that they went for the Robbie Reyes version rather than feeling beholden to the first, but still went out of their way to include Blaze (or Ketch, I guess?) in there too.
But the second half of the season was fab. Great Bodysnatcher style paranoia with the LMDs, a fantastic pseudo-alternate reality arc using the Framework (allowing for some nice return appearances, like Trip) and even a brief adaptation of Secret Wars II, of all things, with Aida/Ophelia at the end there. (Plus Ghost Rider doing a Dr Strange sling-ring style portal in the finale, which was a nice touch).
I'm quite looking forward to seeing where season 5 is going, because beyond "space, I guess?" I don't have a clue.