I can't tell if you're trolling or not, but, if you aren't, I think you're failing to understand the issue here..
No matter how low you go, you'll always see people higher than you, and lower than you on the rivals lists.. I tend to see people higher than me, usually much higher than me more often than I see people with similar mafia amounts or lower.
Now, if I'm sitting at 175 mafia, more often than not I bring up lists with 250-325 mafia on them. I understand this is implemented to widen the brackets to add more rivals to potentially fight, but it doesn't help a lot when there's not much you can do to someone with 150 higher effective mafia than you have. I don't get to see people with 25 mafia, so why would I need to see people with 325? If the brackets were the same, up and down, that may help a bit, but that's not the case. When I was at 175 mafia, I could see people up to ~335 mafia, but only down to ~115 or so. That doesn't make much sense to me.