In limited play, Von Miller was great.  The starting defense played well especially against the pass.  Run defense is a definite concern.  Hopefully, Zach Kerr is not seriously hurt.  But without Wolfe, Crick and now Kerr...the Broncos are definitely shorthanded on the DL.  And teams are going to test the run defense early and often.  I still think Broncos have to scour the waiver wire (or trade option) to pick up a backup defensive lineman.
Todd Davis has to get his emotions under control.  Talib for once did the mature thing by asking Davis to calm down.  And Davis just behaved in a very unprofessional manner.