It's also very hard to make a system where every character can draw against every other character with each character having very different abilities. In current system, some characters are certainly better than others in certain match-ups and can always win with perfect play but the number of advantageous match-ups for each character is almost equal and every player should be able to collect seven points in seven games if he/she employs good strategy but I guess luck factor can affect the results up to 2-3 points under normal circumstances.
I was thinking about 4 1 vs 1 fights, 2 fights as usual with high-tier characters and 2 more with mid-tier characters. That will be possible if I have the time and energy to make a new set of characters. As you said, there'll be more fights, more strategies and more variety in the teams. The amount of time required to make a strategy will be doubled (which will be 20 mins according to Kaoz's estimates) but if we give 4 days for each round per Kaoz's suggestion, it can solve this problem.
When will the next Bleach Fan League be? I'm so excited to participate again. Thanks!