Mostly agreed. I don't mind extra-Biblical embellishments. Scripture contains insufficient detail with which to recreate the scene and dialogue. The Biblical account is a framework, not a script or storyboard.
I'd add a few caveats to that. Extra-Biblical is fine to an extent, but counter-Biblical isn't, and will alienate the target audience. Don't contradict what's there, but embellishing to add detail is necessary. The second caveat is that the subject matter should be taken seriously ... which is where I'd disagree with you on aliens or extra-Biblical "monsters". Don't make the source material into a punch line.
Third ... avoid political embellishments like the plague. Let the story speak for itself ... don't make it a vehicle to speak for you.
SnakeDoc
I'm with you there. It's a slippery slope and it's hard to say what specifically would put me off about including too much fantasy. I dismissed that whole Bible miniseries last year due to all the inaccuracies but for some reason I'm kind of curious to see monsters and things in a big budget popcorn movie. If it plays like they're making the Bible a joke or playing the whole thing off as fantasy itself then I'll watch it once and leave it at that.