I'm curious, why cliched?
Talking to someone that's not there as an outlet for the character's inner side is pretty commonplace on TV. See Dexter, Lost, Six Feet Under, etc. It would only break convention a bit by being someone the main character didn't actually know, as it's usually pretend conversations with a dead loved one.
Heck even a lot of more normal shows can't resist dipping into it every once in a while to bring back a popular killed off actor.
I actually wouldn't doubt it if this show does end up doing it, just probably with Jesse's father instead.