I wasn't questioning Morgan Freeman's tastes or integrity, just if his company had done a lot of faithful adaptations in the past.
Having a look at their filmography now, I've only seen two of their movies (Along Came a Spider & Invictus) both of which I liked, but have no clue how faithful they were to the source material. I know the former comes from a series of crime novels (which also includes 'Kiss the Girls') but since I've never read any of them I can't speak to how faithful they are. As for the latter, I have no clue if Invictus is an original screenplay or based on a book. Though either way, again it's not something I've read so I wouldn't know how faithful it is, even if it was. So be fair though the latter is based on true events so faithfulness to a particular point of view isn't always necessary.
Still, it seems most of what they've done film-wise is small dramas, capers, comedies and the like. Nothing of the scale a Rama movie would probably require. Unless they go the low budget, straight to video route, which is doable if they limit the effects shots, but the writing and casting needs to be *very* good for what's essentially very dry material.
I do tend to agree though that it would probably be better suited as a miniseries. albeit a two instead of a three parter. The recent attempt as 'Childhood's End' showed what happens when you try to pad these things out too much. The result was a part 2 that did nothing but chase it's own tail for an hour while part 3 just sort of tailed off.