I agree, but it's gonna be hard to make an entertaining movie to non-pool players with how PG pool is now days.
Pool has done A LOT to get away from the gambling, hustling, drinking, and drugs image it once was so tightly bonded to. All those things were quite certainly what drew a lot of people to it that didn't know how to play.
You can't have a pool movie about what pool is actually like today, because it'd just be Joe Schmoe going from state tournament to state tournament, and for the pro side of things, it doesn't look much different. Nobody is going from seedy bar and pool room to pool room, sleeping in their cars, winning big and losing their ass in one night, fighting 5 dudes to make it to their car alive. That doesn't happen anymore, and we've already got movies about that.
The hustling and dirty pool like back in the old days is gone, and nobody really wants it to come back. The current pool scene is boring for non-players. We sit in bars waiting for our 30mins to play our match, then go home. The pros do the same, just not in bars. The true money players stream their matches, so there's no more tall tales and stories that lead to good material for a whole movie.
So where does this leave us? Well, I personally love history, and the history of pool and it's players is virtually untapped on a grand-scale. Lot of grassroots videos and whatnot, but nothing cinematic about the people or the sport itself. Everything has been fiction. So I think a good selling, enthralling non-fictional video like biography of someone like Buddy Hall, Keith McCready, Siegel, Efren, from beginning to end, when they were a kid, til now, would just be fantastic. Take their little known facts, talents, skills, put it in a movie from childhood til now, some fictional additions and cinematic magic of course, but keep it pretty inline with their true stories. This way they can take liberty with creativity on how certain events happened, that are just stories.
Just spitballin.