I'm not sure if there would be a way to fix the Tie issues. I'm not a fan of sparring but it does seem like there are lots of flaws accompanied by an endless list of complaints about the sparring system. Delaying,lagging,ect. As far as I know there is no stat for it but I think there should be. If you get points or whatever for a win or loss why not a tie? Some major sports factor in ties in the points standings at the end of their seasons.
I don't have a lot experience in sparring but If I was you I would ask Mr. Thallen he is a spar master and expert I'm sure he can learn you some spar insight.