Hi, I hope it's okay to give some critism and reviews. First of all, it is a great hack, the best one I've ever seen among both GBA and DS hacks I've played so far (at least that's my opinion).
But still, there are a few bugs as it seems. Some of the 580 base stat legendaries do spawn on their respective spots even way before I had talked with the veteran in humilau city pokemon center. Those are Tornadus, Thundurus, AND Landorus, to be precise. And when I talked to the veteran in humilau city, those legendaries which I caught also respawned on their spots as well, even though I've battled them and caught them before. It's possible to catch two of each of those legendaries. And yet, also Meleotta and Darkrai were also on their spots even before I had unlocked their events. I didn't check them if they had respawned yet too, but I can inform you of that if you wish so. So in short, I was able to form a party half consisted of strong legendaries halfway through the game, but still no big deal, it was challenging.
Oh, and this is not a bug, but some guides that come together with the download has some quirks. Some of the documents, (like Wild List) uses japanese names of the locations instead of english ones, so it can become a bit confusing. Just informing here.
I still didn't even finish the game, I'm on victory road. Damn, this hack made me realize that Gamefreak really has to put an end to their old HM traditions. It's nonsense. I have to take 3 pokemon from my main party, and take 3 dummy HM pokemons from PC in order to be able to traverse in victory road, which makes everything arduous.
Edit: Yeah, as I thought, Meleotta was also respawned in musical theater, after talking to the veteran in giant chasm. And I guess Darkrai will also respawn after battling Cresselia post-game. Oh, and forgot to mention, I also saw Shaymin without triggering the event, and shaymin also had respawned. Tornadus, Thundurus, Landorus, Meleotta, Darkrai, Shaymin, those are the pokemon which respawns regardless if the event was triggered or not. Other legendaries I saw until now were fine.
Edit2: There might be some problems with some double battles. The psychic twins at the end of humilau city, sometimes gothitelle casts offensive moves on it's own ally. I don't remember if I've encountered a similar case before......................