#3 R Truth
Raw has been trying to rebuild the comedy element of their show ever since Lana and Bobby Lashley turned out to be a bust and they are actually doing a decent job of it. In fact, between Drew McIntyre's one liners and the ongoing battle between The Street Profits and The Viking Raiders, WWE is backing their comedy segments.
With that being said and Lana being a walking talking soap opera of sorts, why not pair her with the comedy gimmick of R-Truth? Maybe WWE even scripts it in a way that makes it look like Lana is trying to use Truth to stay relevant. She can even eventually claim the 24/7 title for herself, which would be an interesting wrinkle to that whole division.
In the end, there are just so many possibilities for this option and it would be exicting to watch these two work off each other. Whether it actually pans out into something watchable or not remains to be seen and will depend on a plethora of things, but the company has made crazier things work in the past.