Well, with Hoenn, we've already got a precedent for things that are in place, so I don't know if that will become a problem. If anything, I see them adding a few things here and there, but I don't imagine them blowing things out of proportion, especially with a remake.
I think something like the Routes 132-134 would work, seeing as there's tons of non-water trainers in there, especially in Emerald. Adding more islands with trainers would help. I'm not sure how they would implement variations of the surfing theme, though. Unless they had a new variation exclusive to the ocean portion of the region, or just used a different route theme even when surfing. Yeah, I can see them adding signposts or buoys to serve as markers in order to help people keep their bearings in the water routes.
You can catch all three of the legendaries in Emerald, but Groudon and Kyogre were only available post-game, as I imagine was the intent with Rayquaza too before they made a mistake with that. The Johto games always allowed you to get the other cover legendary post-game, so I can see them doing something similar to that here.
I think something like the Routes 132-134 would work, seeing as there's tons of non-water trainers in there, especially in Emerald. Adding more islands with trainers would help. I'm not sure how they would implement variations of the surfing theme, though. Unless they had a new variation exclusive to the ocean portion of the region, or just used a different route theme even when surfing. Yeah, I can see them adding signposts or buoys to serve as markers in order to help people keep their bearings in the water routes.
You can catch all three of the legendaries in Emerald, but Groudon and Kyogre were only available post-game, as I imagine was the intent with Rayquaza too before they made a mistake with that. The Johto games always allowed you to get the other cover legendary post-game, so I can see them doing something similar to that here.