What are some movies with a great concept but poor execution?

[Martoto]

Originally Posted by veritas

The last jedi

bring back luke after hyping him up the whole previous movie but then ruin everything people love about the characters. Even Mark Hamill was disappointed with the execution of that film.

So you're saying you were fine with the concept of the reclusive Luke, feeling despondent, guilty and responsible for his nephew's fall to the dark side and reluctant to train Rey, or any more Jedi, for fear of bringing more calamity to the galaxy than he feels he already has. (all of which was already mentioned in The Force Awakens, by the way)