I wanted to stay strictly to the rules to prevent people from saying I made them up as I went on, but pressure from 10 other people made me change them
That was your problem right there. I know it's not easy when you have a bunch of people mad and expecting you to fix it. You have to stick to your guns and the rule book. It will work if you do that.
I had 10 owners who wanted me to overturn a trade that was voted on and approved by the same owners in a 12 team league just because someone had a personal issue with the owner who initiated the trade. It was the biggest mess I have ever encountered in fantasy football as commish but I stuck it out and at the end it was fine. I gained respect of the owners for doing what was right and not what was popular. Now everyone in the league trusts me and my judgement as commish. It's much easier than it was. It works.