I never saw Zhang Yang's Shower (2000). Somehow he doesn't sound like that good a director to me. As for Amal, I would go to see a movie with Seth and Shah in it, but I can't tell if I'd like the story. The ideas sound hacknied to me. When you say "plot developments" aren't incredulous you mean they aren't incredible. Incredulous can only be used for the attitude of a person not the info itself, which he might be incredulous toward. Incredulity is a state of mind.