>>21823492ORAS hater here, but yes, cool feature.
One thing they could've done though is had non-regional Pokemon obtainable through it, but it would show up as a question mark. There are 5 or so non-regional Pokemon in each route (shitmons in earlier routes as usual) but any Pokemon discovered this way has a much lower level. You can only see dex entry once upgraded to National.
eg granite cave has zubat, sableye, etc but you have a 5% chance at encountering a "stray" eg Roggenrola, Audino or Magby.
OR they could be even "stray"er by being accessible wherever you are but there are 10 tiers depending on how many badges you have etc eg tier 1 = weedle, tier 5 = Galvantula, tier 10 = Axew
