Looking at this issue from the technology viewpoint: won't the current rules 'encourage' the development of lighter batteries which would be the ideal solution. It does not seem fair, but if the rules are changed what would be fair? Allowing unlimited 'fuel' weight?
Sometimes it's best for the rules committe to just stay with existing rules and let technology 'level' the playing field. The difficulty in convincing anybody to change the rules in this case is that electrics flying under the existing rules are VERY competitive.
2 more cents...