Lord of the Rings Online has been running for quite a while, and while it's not an ugly game its graphics are getting a bit long in the tooth. That's no one's fault, really, just the march of time making itself known. One fan has taken up the challenge of seeing what can be done with a bit of adjustment and retexturing, and the results are available on Reddit for fans to admire.
The "new" models all have the same technical specifications as the models currently in the game, but have simply been adjusted and had their textures improved. Currently five of the models have been done -- male and female elves, male and female hobbits, and female humans. You can browse through to see how the updated geometry looks, although there's no way to put these models in the game at the moment.
[Thanks to Emilia for the tip!]