Wow, I really like the intent of this idea. I once thought that the current ABBA system would be easy and error free. But, seeing this in action on many games, I now know this is not true. As the OP stated, if it isn’t tracked carefully every single point, confusion can (and does) arise. How many coaches carry around a cheat sheet so they don’t mix this up! I like this idea but I fear a forever-one-way decision is not going to get enough supporters.