People aren't used to receiving stylistic suggestions. I've been through so many betas and at least 80% of them only do the bare bones. They maybe have one stylistic comment for a 35 page chapter and the rest is just punctuation and such.

I'm considering writing something up on how to beta because there are so many people that want to but have no idea how and end up doing nothing for an author. *emo tear* Finding a good beta is impossible...
-TJ