I'm Walkin' Here has me very spoiled - it's really nice to simply walk through your followers instead of them blocking every single door or hallway.  It works by disabling collision on followers marked as "Teammates".  Your animal "friends" that you may acquire with SL Survival do not get tagged as Teammates however, so this edited version of the _SLS_AnimalFriend script fixes that.  (And let me tell you, it was not a simple thing to gather everything I needed to make this script compile.)