What if the remake of Nightmare is awesome? What's so wrong with that? It's not obliterating the existence of the original. And I'm coming from the perspective of a huge fan of the Nightmare franchise. Look at New Nightmare. That was a reimagining before reimaginings were in vogue, and I thought that was a pretty cool movie.
I'm not saying it will suck, or it will tarnish the original in any way, and I'm not usually the kind of person who moans about remakes all the time... I just don't see the point, and I really can't see it improving on the original.
Maybe I'm just getting ground down by the slew of pointless, sub-par horror remakes we've seen in the last decade - The Texas Chainsaw Massacre, The Hills Have Eyes, The Ring... none of them brought anything new to the table, and were piss poor shadows of the originals. Originals that didn't need remaking or updating in the first place.