Are there any romhacks that don't change up HGSS too much, but improve the Pokemon distribution + makes the games slightly better balanced and not as piss-easy. I'm not looking for some "all Pokemon in one region" bullshit, like in Drayano hacks. I'm just looking for pretty much a fixed version of the vanilla games

I'd also appreciate recommendations for other romhacks. They can be enhancement hacks, or completely original