If they want to make sequels to this "remake" if it's successful, they would be better off not having McCloud win the prize in this "first film" after he defeats Kurgan in the end, like he did in the original movie. Save it for the third or fourth movie.
Also, have new bad guys in the sequels who are not just ripoffs of the Kurgan like the sequels to the original film were. The TV show was better than the sequels to the original movie for many reasons, the biggest one being that the bad guys were wide ranging and had different motivations and personalities (some were old friends of McCloud who he had to kill because they were doing evil things), and didn't just copy the same first bad guy and the same first plot time and time again.
That is an example of a bad way to make a sequel, basically repeating the first movie, and Highlander did that over and over again. Hopefully any sequels to the remake (if there are any) won't repeat the same mistake.