it's funny how the spn concept is so simple, it pulls you in, two bros in a metallicar hunting demons, looking for their dad. Spn Bloodlines almost has too many plots from the beginnng

Sam and Dean meet Ennis a cop and reveal the supernatural to him

Chicago has five monster mafia groups

The shapeshifter family has a guy ala Sam who had to be 'pulled back' from normal life

the werewolf family has a gal who's in forbidden love with the guy from the shapeshifer family

the cops best friend and partner is a monster or involved with them

see, any one of those ideas could be a show, and none of them are compelling me.