This is the probably not in order list of reasons for rejections of slush today. No indicators of the number for each since its mostly irrelevant. Reasons listed here may or may not be worded exactly as listed in rejection letters.
No ability to suspend disbelief.
Curious application of language
Lack of topical authority
Unsupportable structure/pace mix.
Responses to rejection today:
1 dead email
1 signed elsewhere (that was the wrong market)
1 "thanks for considering it"
In about an hour I’ll be calling someone about the novel I mentioned Friday.