[Other] Few question about potential hack idea

[jAvAcOlA]

I'm thinking of attempting to make a hack of Emerald where you can go through Kanto in the postgame. I have a few questions about this:

1) Is there any way to have FireRed and Emerald tiles in Advance Map simultaneously, so that I can create literally the exact same Kanto maps? I don't see how this could be out of the question when hacks like Liquid Crystal have 3 regions, all of which look different.

2) Is there a way I can add 20 or so OW's without overwriting current Emerald sprites in Overworld Editor? I'm trying to add sprites of Blue, Prof. Oak, etc. and it's making me overwrite a sprite of an Emerald character, which then screws up the existing game.

3) Is it true that you can't add wild pokemon data to new maps without corrupting an Emerald ROM?

4) What is the maximum number of new maps I'll be able to add to the existing Emerald bank?

 

[JosefigGaming]

1) Is there any way to have FireRed and Emerald tiles in Advance Map simultaneously, so that I can create literally the exact same Kanto maps? I don't see how this could be out of the question when hacks like Liquid Crystal have 3 regions, all of which look different.

No, that would take too many tilesets, which no game has
And Liquid Crystal only has 2 regions, which both use the same basic tileset

2) Is there a way I can add 20 or so OW's without overwriting current Emerald sprites in Overworld Editor? I'm trying to add sprites of Blue, Prof. Oak, etc. and it's making me overwrite a sprite of an Emerald character, which then screws up the existing game.

You can't add, but you can replace. For your luck, Emerald has 255 (roughly) different overworls, because about 100 (also roughly) are secret bases furniture
I'd vastly recommend you replace the furniture, but if you do remove a piece of furniture, make sure you remove from the stores aswell

3) Is it true that you can't add wild pokemon data to new maps without corrupting an Emerald ROM?

No

4) What is the maximum number of new maps I'll be able to add to the existing Emerald bank?

Ill let someone else answer that since I don't really know ;)

 

[jAvAcOlA]

No, that would take too many tilesets, which no game has
And Liquid Crystal only has 2 regions, which both use the same basic tileset

Well, it also has the Orange Islands, which look totally different from the rest of the game. So what would you say my best bet is? I tried remaking Pallet Town with Emerald tiles and it looks awful.

 

[JosefigGaming]

Well, it also has the Orange Islands, which look totally different from the rest of the game. So what would you say my best bet is? I tried remaking Pallet Town with Emerald tiles and it looks awful.

Right! I forgot about the Orange Islands
You should probably make an hybrid of those two tiles, or just try to find some tiles that you like
Just search in devianart