Thought
If Castiel is human you know what that means.
Permanent back seat passenger!!!! Sharing motel rooms!!! Who gets to sleep in the same bed as Castiel! Dean and Sam flip a coin and Dean keeps losing so he must share Castiel's bed and Castiel cuddles. EVERY SINGLE NIGHT!!! Plus Castiel always wakes up humping Dean's leg.
So much potential it blows my mind. Though I still want Castiel to be able to sneak up on Dean and startle him when he suddenly appears in his room.