For me it's more of a miss in encapsulating an overbearingly fan tilted "feel-good" desert serving, rather than a well crafted conveyance that is surgical, masterful and sweet spot hitting akin to black widow's mark (mayhap could have even been an astonishing expose). Thus it lacks the credibility ingredient needed as a prerequisite to invest whole heartedly into a story arc that weaves a more natural flavor & incorporates a more probable ending; that would certainly earn the respect and ticks the satisfaction factor from the matured adults category being die hard followers of the marvel characters who are also great fans of good story telling & intelligent endings.
Please don't get me wrong, kudos to the big R Brothers for soldiering on in fatigue to end the story. Perhaps they did such a good job in IW that staged an expectation that was way too high from us fans who have come to expect nothing but the Epic Best ending which unfortunately this was not....leaving lots of questions unanswered pertaining to the characters.