Slow? I was there when the mod first began, and following it like a hawk. I am an old-skool space-sim fanatic.
Porting is the closest we will get though... as with many "remade" classics now it's in the hands of passionate people who have a vision and not enough time to implement it how they would like, there will always be sacrifices to be made.
Barring Freespace 2 that is.