Not sure who this remake was made for
It's not for the fans of the original because it butchers the original aesthetic and brings virtually no new features.
But it's also not changing the original in any meaningful way. The mouse control is a good addition in theory, and I did express my wish for it in my review of the original, but that did imply a full 360 degree movement, which they didn't add here. You still have to manually turn in four directions by pressing buttons. But then, if you're gonna add mouse control, the one thing you could've added is automatic fire because mice are more volatile than keyboards. You already have both mouse buttons do the same thing. Why not let holding down one of them do the traditional auto-aim and the other one do automatic fire?
Beyond that, I don't see any changes. This really shouldn't even be called a remake because the only thing it changes is the graphics, and for the worse. I think the only people who would prefer this over the original is those who think pixel count and abundance of visual effects are the only things that matter in graphics. Artistic vision be damned.