What happened to these WWE wrestlers?

[187CREW]

Sin Cara - Haven't seen him since his tag team match against Team Hell No

Rey Mysterio - Same haven't seen him since his tag team match vs. Team Hell No.

David Otunga - Not sure if he still wrestles.

Heath Slater - ?
Justin Gabriel - ?


Also would these feuds be good:

Ryback(Face) vs. Lesnar(Heel)
Cena(Face) vs. Triple H(Heel) vs. Jack Swagger(Heel) - WWE Championship
Del Rio(Face) vs. The Rock(Heel)
Rey(Heel) vs. Miz(Face)
Orton(Face) vs. Fandango(Heel) vs. Jericho(Face) vs. Barret(Heel)