Royd is, I believe, the great nephew of Christopher, and the Great-grandson of Professor Tolkien. In terms of current importance within the Tolkien estate, It's Christopher in charge, with Royd having some minor role. Simon was disinherited from it all back when he went against his father and offered Peter Jackson his help during LOTR. They've mended fences now, though I kind of doubt that he has any real authority within the estate. That might change if Christopher dies, but who knows.
You have to remember, Christopher's objections aren't so much quality of film, but more to fact that it'd be a film at all. It's not that they couldn't make a good adaptation but that they shouldn't . He doesn't view these books as something cinematic, he looks at them from the point of view of their linguistic and scholarly importance.
So, no, he'd never willingly let anyone try and make a film of the Silmarillion, no matter how talented or faithful.