The effort invested in 'getting it right' should be commensurate with the importance of the decision.
'The Sopranos,' for instance, is arguably the best cable show of all time. They could have made a movie, but that show ended so perfectly, it would almost be a disadvantage to make a movie like that. Then again, if you made a 'Sopranos' movie, people would be lined around the block to go see it.