I have a similar problem. I did find Marissa Meyer's The Lunar Chronicles to be a fascinating series, although the magic system wasn't that keenly developed. Brandon Sanderson was my first real look into good world building-- I haven't yet found an author that is even in his league, so... I get your problem for sure.
I know this isn't a book, but I personally really liked the Avatar: the Last Airbender magic system. I guess also... storms. Here I thought I was a reader and now I can't think of any good fantasy books beyond sando's, ahaha
Ooh, also, try not to double post