I've made a number of independent films that didn't receive theatrical distribution, that a lot of people haven't heard of, and as a result, I've conditioned myself to go into small independent films with the expectation that they will not, and therefore, I have to find my reward elsewhere.
I worked in script development, many years ago, and read a lot of scripts. Between that and the scripts I've read as an actor, and I'm a writer as well, I think I have a pretty good sense about whether the bones of a story are there and whether the structure is intact.
If you think about filmmaking as an entire spectrum, starting with the writer and ending with maybe the marketing department, the actor's contribution is a rather slender band.