Mouseferatu
Hero
Dennis L. McKiernan's publisher liked the trilogy. The publisher encouraged him to change the names and setting to sufficiently avoid a copyright suit and they went ahead and published. (The wisdom of this decision may be debatable.)
Before I ever knew this, I picked up the first book. Although I despise claims of copying Tolkien, I couldn't stop thinking it as I read through the book. I made it to around page 40-50 and quit. The writing quality was poor; obviously as a result of the re-write.
Glad I'm not the only one. I read it decades ago, completely ignorant of the LotR connection. (In fact, I hadn't even read LotR at that point, though I think I'd read The Hobbit.)
My problems weren't due to the LotR-like aspects--as I said, I didn't know about them--but just due to the fact that the books were bad. McKiernan might be a great writer, and the books he's published since could be fantastic. I honestly don't know; I've never had the urge to pick them up.