I just don't see who else there is for Silva to face. People say Hendo if he gets past Shogun but lets be frank here, aside from an act of god or Shoguns knees blowing out again he is not going to win that fight.
The Palhares loss to Maquardt was more of a freak accident than anything in my eyes, Palhares was going for a heel hook, Nate slipped out of it very easily... Palhares looked at the ref going 'wtf' and basically got smashed in the face, leading to the stoppage.
Palhares brings something that Silva hasn't faced before, absolute top level BJJ (came second in this years ADCC) with great take downs. Thus Silva wont be able to pull his usual crap that he does against BJJ fighters of dancing around them.
Dunno, maybe I'm on Palhares' sack a bit, but I think he'd stand a good chance. You are right that he probably needs a couple more wins before he'll get a shot though.