From Bulbapedia, the community-driven Pokémon encyclopedia.
A Romhack I would make if I could
If I could make a Pokémon fan game, I would like to see one based on Pokémon Crystal or potentially Heart Gold, Soul Silver that mostly shows the answer to "What if Pokémon could have been updated retroactively?"
It would include the fairy-type abilities the physical special split and most importantly all the new evolutions baby forms and pre-evolutions that have been introduced since the games first came out. Breaking from its premise a little I would also include the remaining Pokémon from Hesui and perhaps regular Zorua and Seedot.
Updated Teams
{Party/Single
|color=3FA129
|bordercolor=29691B
|headcolor=82C274
|sprite=Spr HGSS Li.png
|prize=$PokémonDollar.png1200
|class=Elder
|classlink=Li
|name=Li
|game=SV
|location=Sprout Tower
|pokemon=3}}
|
|
|{{Pokémon/9
|game=SV
|ndex=185
|pokemon=Weepinbell
|level=15
|gender=male
|type1=Grass
|type2=Poison
|ability=Chlorophyll
|move1=Vine Whip|move1type=Grass|move1cat=Physical
|move2=Acid|move2type=Poison|move2cat=Special
|move3=Growth|move3type=Normal|move3cat=Status
|move4=Sleep Powder|move4=Grass|move4cat=Status
|}
|}
"New" Pokémon
Reaginal Forms
Fairy types