As the NFL has evolved, the slot receiver has become a more and more dangerous position to play.
I came across this piece published earlier this year that follows the history of the slot receiver from the original concept introduced by Al Davis.
A History of NFL Slot Receivers: Are They Playing with Fire in Today's League?
If nothing changes, slot receivers will replace running backs as the "disposable" skill position player: draft a fast guy; plug him in; cut him when he loses a step, shreds a knee or breaks his brain.
I can't really argue with the conclusion.