I was reading comments on Linked In about multiple protagonist films being essentially TV forms and not at present popular and accepted, I'd disagree. I think they are very common in film and have been for many years. Almost every time you see a poster that shows a group of characters together you're looking at a multiple protagonist film. Almost every group mission, siege or reunion film is structured this way - because the point of such stories is that a number of equally interesting individuals are thrown together by the same event and each reacts differently (and interestingly) to each event. These films aren't rarities or art house films. 'The Hangover' series are all multiple protagonist films, as is 'The Full Monty', 'Death at a Funeral', 'Independence Day', all of those 'Cinderella Sports Team' movies and really any movie that could be subtitled 'Let's put on a show' or, in gangster movies. 'One last job' . Most war films are structured this way. I haven't yet seen it but from the sound of it, I imagine 'The Monument Men' is multiple protagonist film. From memory I'd say the Police Academy comedies are also multiple protagonist. Commercially, the great thing about these films is that they normally provide a number of really good roles that attract good actors. As for the idea of considering your multiple protagonist for a TV series instead, it's a good idea, but it'll only work if your premise - what your multiple protagonist group is doing - must be capable of providing many seasons.
Linda is a screenwriter, novelist and playwright. As well as teaching and mentoring writers around the world, she regularly consults on screenplays at the highest level in the US, UK and Australia.