Sticking rigidly to "consistent" characterization can also limit your possible story ideas. If, as Flash mentioned, your aim is just to provide a fun experience from week to week, then it's okay to have the characters just be loosely characterized stand-ins for the types of characters you might need to make fun standalone stories.
Also, consistency is not always equal to good characterization, especially if "consistency" means "has a single character trait from which they never deviate." Most real people have more than one.
Consistency does not mean rigid or one-note; it just means that if a character is established in one episode as being, say, overly determined and focused, and in a later episode is suddenly full of wanderlust, that change has to be accounted for by some development that occurred in the story.