I'm currently playing this hack and I must say it is very enjoyable. The cries of 4th gen pokèmon sound very well, and many of the new or updated moves work correctly, and I always approve when some weaker pokèmon get revamped so they can be useful. In general, although I haven't finished it yet, It's a hack I would recommend to those who want to experience a revamped Hoenn without having to steer too much from the original Emerald.
There are some things I didn't appreciate, but it's more for personal taste rather than lack of effort, so I won't even talk about them. It's just a couple of minor things that don't ruin the experience.
I found a couple of errors while playing, for example there's an item ball on Route 113 (on Slateport side) which freezes the game when you try to interact with it. (This may be only my problem, I don't know.) Also, there are some minor mistakes with type effectiveness: Dark types are no longer immune to Psychic type moves, and do not resist Ghost type moves, while Fire type doesn't resist Fairy type moves. The move Sucker Punch acts exactly like Fake Out, meaning that it hits only in the first turn and makes the opponent flinch. And lastly, the hiker that gives you the Egg near Rustboro Gym reappears at some point. If it can help, I'm playing the normal version, not the Challenge one.
I hope you keep up the good work, this is a great hack and you really did a great job doing this :)