Re the RPS and HP: if you were going to write RPS where making a movie was a big part of the backdrop, so much more interesting to use LTR, because they were all there together over a very long period of time and so many of them were so far from home and there's such interesting things they could do in their off hours, aside from boffing each other I mean. There seems to be a lot of surfing in LotR RPS for instance.