I mentioned recently that they should look at this. Excerpt from Arians interview yesterday
Q: Any specific changes? I saw a lot of tight end at fullback today.
A: Last year we started with the three-TE stuff and we lost Jerame Tuman right away. You want to have those packages available. You keep throwing stuff at them and utilize guys who can play multiple positions to give the defense a different look.
It just makes sense because we have a really good group of TEs.