For Pantheon:

You can block 3 autos in a row if you use your shield passive correctly, and staying aware of how many "stacks" of your shield passive you have can easily win you a 1v1 with the enemy Jungler early game, or can make a gank easy and healthy. Basically, if you get your shield up, and then get the stacks to 3 (usually on scuttler), you can tank an auto, throw your Q and tank another auto, and then W and tank another auto.

Also being aware of your shield stacks can make your jg clear a lot easier and healthier (e.g. not W'ing the jg creep if your shield is already up...)

For the raptors and wolves camps, it's actually ideal to clear out the small creeps first, since your passive works against the autos from the big creeps, but not the small ones (I don't play any other junglers so I don't know if that's just in general or not... but for Pantheon it definitely helps)

He's a really simple champ so I'm sure I'll get some "no shit" comments, but he definitely has some "deeper" levels to him that allow for optimal play.