I read a story today about how Bravery Default allows for you to increase or completely stop random encounters in a RPG.
Random encounters, the JRPG kind are just terrible even if you can turn them off.
I have only briefly played the demo of Bravery Default and was put off by dudes called Ringabel who look like 10yr olds. So I didn't get to see much of the combat system but it was the old walk a field, get ambushed a ton of times with battles which you can sleep though. No challage, no skill, just click the same button.
Random mob placement is important, but you need to be able to see them, avoid them but more importantly this is a RPG, they need to have some point of being where they are.
Ultima 7 which is my opinion the best RPG ever made, places its enemies where you expect to find them. They do respawn but you can avoid, run away or talk your way out of a encounter. Encounters are in the main game map, there is no battle screen and combat can be completely unexpected.
Skyrim also has logical creature encounters.
Both of these games are what I call a RPG games. Proper immerse games where your characters don't have retarded names.
Having a option to turn off random encounters is just a bandaid for a already infected sore that should have been cured years ago.