The people I am playing against are all my friends, they either have the hack or don't care if I use it. (flash cart btw)
You mentioned Serperior, since on the hack it is Grass/Dragon, are there any other pokemon that had type changes in this hack?
BTW: I think this hack makes the game much better than unhacked version - the battles are actually challenging to win in this unlike the normal game where I never had problems.
Knowing Drayano, I'm sure Serperior isn't the only one. But in the full version of the hack, even though it is harder, pokemon have various changes such as movesets, stats, etc that might not sync very well when traded to another game.
But I agree, Drayano's hacks are much better than the original games. I play the light versions without the pokemon edits and increased levels because I still have friends that I'd like to trade with and battle. Drayano inspired and helped me make the same exact type of hack for Pokemon Platinum. Though I never implemented a hard mode.