It would narrow down what you could do by quite a bit if you are limited to 6 seconds per shot. While that is average, there are many shots that are longer. Also, you bring up a good point about consistency between shots. That doesn't seem like as hard of a problem, but it's still a big one.
I don’t care if the normies dont do long shots. The best movies have very long shots. Children of men or 1917. Until AI video gen can get past 5-10 second shots of slop, we won’t see any major critically acclaimed AI movies or related.
Generating a long video one shot at a time kind of makes sense, as long as there's good consistency between shots