I think the Rams DST is definitely on the rise and a team to take note of in dynasty. They have played well all season. They confused and flustered Matt Stafford week 1, resulting in 3 INTs. Then they brought RG3 back to earth with a performance that was better than stats indicate. Then they shut down Cutler in Chicago despite a loss. Then they stifled Russel Wilson, and followed that with a dominant performance against Arizona. They have exceeded my expectations in just about every game this year.
They have the pieces to be a great defense, a shutdown corner in Finnegan, a playmaker across from him in Jenkins, a solid MLB in Laurinaitis, a defensive minded coach who knows how to succeed in the NFL, and two very good edge pass rushers in Long and Quinn. Not to mention that reports have been highly favorable for their rookie DT Michael Brockers who is just now getting back from an ankle injury.
Their biggest problem is their rush defense, but in my opinion that is the easiest aspect of defense to improve with good coaching, which hopefully Fisher is bringing.