I would introduce you the pack of lotro user interface themes I maintain : JRR Skins Collection, A Tribute to Middle Earth
This pack contains the most beautiful skins developed by Lotro fans since 2007, in an special edition. Every skin has been rebuilt, compressed, fixed, updated, revisited and filled up with extra features.
There are also some exclusive bonus themes ! There are currently 12 different main themes included in JRR Skins Collection. Most of these themes ares declined into variations, for a total of 25 sub-themes.
Three addons are also available for download to expand your Lotro game experience if you wish to.
Of course, all of this is completely free ! No email required of any personal information or whatever, just press the download button and unzip the file at the right location on your hard drive.
There is no adware/spyware/virus or any bloatware embedded in the pack. The zip file don't contain any executable file, only pictures and xml files.
Using skins in lotro DON'T have a negative impact on your computer performance.
Every featured skin in this pack benefits a lot of panel enhancements, as extended panels, less intrusive store buttons, numerical pvp rank icons, a few localization fixes, etc...
The better description are screenshots and in-game testing. Both are available from this page :
Scroll down the linked page to see some (outdated) screenshots.
In addition, I also maintain another standalone skin for lotro : Azure Glass