SmokingMonkey
MLS....come to STL!!!
People will also cut good ones during the bye week too, much like kickers. You might find someone that's actually savvy enough to have a top performing defense on a bye and manage their roster in a way where you don't have to cut (ie say put a player ruled out that week on IR to pick up a streaming D just for that week) but its somewhat rare. Even in competitive leagues, they'll get cut.
Now that we're getting into the bye weeks and the early wave of injuries have rolled thru, my redraft rosters don't have anyone that is droppable in order to stash an extra DST. Yahoo let's you drop players that weren't in your starting lineup and it would be great to grab BUF DST for their next few games but not dropping Baker, Evans, Hunt, Juju, Engram, or Najee for a DST