The current version is not a good movie at all. It’s a Stat Wars knockoff with a boring story and the visual effects that aren’t that great.
I’ve read that Snyder claims the directors cut is completely different, it’ll be R-rated, extra violent, etc etc. I really don’t see how making it R-rated is going to fix the problems it has. I’m not much of a fan of Snyder though, so I guess you should take my opinion with a grain of salt.