Lets see. As I've played the rom of heart gold, here are the things that should have been changed. Some of the battle area elements for some areas like sprout tower and ilex forest have rocky elements, when they are indeed not in a cave but on grass and in a tower, and that bothers me a bit. Another thing is the overcrowding of legendaries. I mean come on, why would we need the 3 legendary birds in a another 4th gen game when they are in platinum? This makes platinum non canon now because of the birds and even groudon and kaiogre? Those should've stayed in hoenn, where they belong. The next thing that bothers me is the new mt silver layout. It was fine as it is, even if it was a bit short. Why did they have to change it to a mt. coronet feeling? Other than that, the only other thing that bothers me is the anti piracy precaution they took. When you play the game, it freezes after 45 minutes with patching, otherwise, it would freeze every 10 minutes. This aggravates me as I cant play the game and get into my "zone" of when I spend hours of nonstop playing without resetting it. That's basically everything that bothers me. Nintendo did a fine ass job on this. Aside from what I mentioned, the game is great.