[munk-a]

I think, in your scenario, the initial "bland script author" is adding nothing of value. You'll get more quality quicker by writing it from scratch.

[dylan604]

I think you're missing the point, or you're grossly overvaluing the quality of "from scratch" scripts that are made. There are some very bad scripts out there that have been made it all the way to being a very bad movie that I've watched. So many "straight to [VHS|DVD|Home Video|Streaming]" scripts that somebody green lit. Just imagine how many more were written/read and not approved.

[shiroiushi]

I don't think it matters much either way. There's been lots of movies made with "from scratch" scripts that were excellent (and a lot of stinkers too obviously), but there's also been plenty of big-budget Hollywood blockbusters with absolutely terrible scripts, when there should have been more cross-checking. Just look at the last few "Alien" movies, especially Prometheus.

[deskr]

There have been at least two film what went from inception all the way to film and then straight to the rubbish bin without any outsider seeing it.