On remakes/ports, There's little wrong on approaching it to newer generations of both gamers and technology. The only real comparison with other mediums are book editions, and those do work more like patches. You can hardly replace the original, and most of the time they're minor enough to not even need to be marketed as something noteworthy, like say, all the Xbox One X versions of Xbox games that are coming out. And most of the time, at least as it should be, they are handed to a studio dedicated to do such projects, ideally with supervision of the original creators. Like for instance the Studio ICO games'. Will think of sequels in a bit.