It was deemed illegal to rip models/textures from other SE games (CC and Dissidia) to put in FF7. Is the opposite not going to be considered as such?
The decision on that was to leave current gen consoles alone (and PC games that fall within that approximate timeline). Anything before that is fair game to evaluate and reverse engineer or even "rip" if you want to. That being said, if this forum turns into one that is mostly about ripping content from games, rules will be put in place to prevent it entirely.