See, I think otherwise. I try to collect all Pokémon, legendary or not. That's why I am working on my Black Pokédex and currently playing games based on what I still need.
I will have to go to Pearl and Platinum soon since I'm nearly done Kanto (playing W2 a bit for Growlithe from Virbank Complex), but I guarantee you everything from Starly to Froslass will be located and brought into the game. Because I collect Pokémon, not just legendaries.
Under that argument, there's no point wandering around catching 39 legendaries after you've completed the Lauren League.
It could always be connected somewhere to Lauren. Nature Preserve is an idea (for Grass types NEway), but they could still be added to a volcano area (for Fire) or to some watery area (Water types obviously). Connecting all three in one area might be tough; three special areas around Lauren - where the starters are bred for new trainers - would be cool.
I didn't know professors eventually give out more starters. I'll look into that. When does that begin to happen?
Something like Nature Preserve...? Nah, I think that would be pretty useless 'cause you would go there just to catch starters who will just be in box =)
And I don't know if it was a bug or intentional, but you could get more starters from Profs. even after obtaining one.
Just saw that comment that you can't get all starters, only the ones you select.
What would be your thoughts of adding an area (accessible only after one has 16 badges) where you can catch all of the starters? I know I'm not the only completionist type out there. :D I can create maps once I've gone through and know where everything is (and can pick a good place to connect it to), but I think it would be a nice little addition that you don't see the likes of in standard games.
Well, after a post in the ROM hacking forum, I determined the only fix for the two tiles in Snowce City is to remove the snow from those two parts of roof. After reconstructing the nearby tiles, I have something that looks acceptable.