Obviously Maia hasnt worked on his BJJ that much since working on his stirking, I am a Palhares fan, but Maia is probably still a bitch to tap
Maia would be well schooled in stopping the leg attacks, Palhares is a beast though, but he couldnt sub Hendo, Miller or Nate (greased), Maia is still an elite level BJJ guy and with time to prep I can see him fending off the subs
Probably end up being a stand up battle like you said though