What is 'proper Tolkien', though? Recall how much was changed in the making of Peter Jackson's films. Take, for example, the style and feel of the Elves - what PJ did is not exactly what Tolkien would have envisioned, or is only now and again. In the movies they are more etherial and mystical. And they have pointed ears, a thing that in the Tolkien world is at best an obscure comment - never in any major work does he mention such a thing. The 'graceful' Legolas would have been a bit sketchy for him, too - he once commented on an effeminate drawing of Legolas, saying that he had the greatest physical strength and hardihood and perseverence of all the fellowship - able to run barefoot over snow and rocks, and the strength of arm to shoot down a Nazgul from the air. The Elves, as a whole, were a lot more physical and real than they were made out to be (indeed, if you read the Fall of Gondolin, you see them wielding clubs and slings, which seem very un-typical-elf-like.) Though PJ made an excellent movie, he neccessarially changed things - it's the individual artist's touch. However, the idea of the Elves with their tall helms and mail of silver, like the Gnomish king Fingolfin who fought the first dark lord before the gates of hell, is left behind... The same could be said for the representation of the Numenoreans at the start of the Fellowship. Tolkien in fact drew their helms - and they look not a bit like they made them look in the movie. Personally, I think PJ and the whole artistic team at WETA one-upped Tolkien on that one. The colourful-shell like helmet wouldn't have looked nearly as good. Or the Balrog, even! Kudos to them for adding wings, but it's too big. I mean, the chief balrog Gothmog was killed when the elf lord Ecthelion, at the fall of the city Gondolin, drove the spike of his helmet into his heart. The balrog can't have been that tall. Nor, if they were of that majestic stature that the movie portrays, could the mortal hero Tuor (ancestor of both Elrond and Aragorn) killed five of them in one battle. Or, heh, another... Legolas' hair. It's blond in the movie because there's an artistic tradition that they are following, but technically, it's almost certain that he has dark hair... unless he has Vanyar blood like Galadriel, which is unlikely. Anyway... okay, that's a long set of things, but seriously the point is, PJ changed things, and isn't exactly Tolkien, and it was okay. So I imagine that someone else could do it, too.