Whilst I like the new rules for challenging for titles, I think they could be adjusted a bit. Main reason is that the current rules make it really difficult to get fights if your undisputed. Most of the time I need to drop belts in order to get a fight when undisputed.
I would change it to: WBC: top 5, WBA: top 7 IBF: top 10.
Or change the rules for undisputed challengers needing to meet all the categories.
Just think it’s a bit of a pain when you can’t get a fight when undisputed (which happens more often than not).