About all my pet peeves about Fantasy can be summed up by reading Eragon (reluctant hero from modest means, a just king overthrown by a tyrant, swordplay, dragons, demonic wizard). People marvel that it was written by a teenager. I didn't. I've read better stories by seventeen year old's but their only handicap was that mummy and daddy wasn't in publishing. I guess Palolini had a choice between getting his amateur drek published or a new Volvo as a graduation present.
As someone who's sort of self-published a book -- it really wasn't very good, so I won't be sharing the link, sorry, like, I mean, REALLY bad and in need of serious revisions -- it bugged the hell out of me when I heard this kid got Eragon published at his age.
I like Sean McMullen's fantasy because, while there are a few characters in the above mold, many of them come from diverse backgrounds -- monasteries, sorcery groups, politics, royalty, et al.
I also dislike -- in Fantasy, anyway -- these two conventions that suffuse Robert Newcomb books:
* When the author sits down with the first draft and a thesaurus and proceeds to replace every instance of "said" (Rowling has done this), overuses adverbs (the last two Dune books were great about having almost no adverbs along with said), and tries to find the most obscure word possible.
* A "factual" writing style -- "due to the fact that" is one of the worst phrases to use in fiction, I think. Even in the sex scenes -- many of them unnecessary, IMO, and I'm a reader/writer who enjoys sex scenes in fiction -- Newcomb has a problem with being overly factual.
Also, even though I'm doing this in my own fantasy novel, I sometimes feel that the "journey" is an overused cliche. It's like, okay, here's your hero, now go on a long quest, collect
plot coupons, and then kill the bad guy at the end. I think a lot of fantasy authors use the journey as a way to fill space.
That leads me to my final pet peeve about fantasy: NOT EVERY BOOK NEEDS TO BE A DOORSTOP! And a corollary: not every book needs to be a trilogy. Many of them can't even support the 700 pages of the first volume!
The publishers of the Star Trek novels were really bad about this up through about the middle of last year. Diane Duane's 3rd and 4th Rihannsu books had font that was so large and line spacing that was so wide that all we were really getting was one book for the price of two.