I think Sami, even in a loss, will get solidified as a top babyface. The Bloodline is still active. We don't know where Jey's loyalty lies. By design, this storyline has multiple paths and ALL of them are at least good, from a logical standpoint.
The only way they can fuck this up is by doing a three way. The Wrestlemania match has to be between any pairing comprising of Sami, Cody and Roman. It needs a one on one confrontation, even if it does not end there.