I think the problem here is the expectation upon which these compared click-through rates rest. Yes, users that are already around and willing to get used to the new setup may be more likely to click new titles. But to obtain that you sacrifice:
- The marketability of the site. This would hurt the small creators by extension.
- The reliability of the section (people expect a certain thing when they click popular. If they don't find the sorting useful, they will cease to use it rendering the section useless).
- Some of your biggest earners. Some may leave the site, others may have to centralize their focus on other sites. This would hurt the small creators you are trying to help by extension.
- Some of your contracted earners. Like I said I am probably one of those that escape this with the least harm, but if I may speak for some of the lower income premium creators for a moment you would be gambling with the earnings of people who invested their time and brand in you.
I hope I don't come across as too harsh because I am not only writing this through the haze of the financial loss that corona has caused, but I literally most likely have had corona myself this week so I am not in my best state... but some of your most essential marketing tools and contracted creators are practically begging you not to do this. Not just for us, but for the sake of the entire site. The popular section has an essential marketing role and you can't force people to read more new content through it without sacrificing more than it's worth long term.
If you want to bring people to see more niche content, content that is less seen currently, etc, then I think the collected wish (from conversations I've had with other people who are concerned about this potential update) is a functioning search system. Allow people to not only filter by genre, but add search words to further specify what they are looking for. We already have series tags (or at least had last time i checked..?) so why not let people search for them??
A functioning search system will mean that users, once they understand the site (until which time a reliable popular section is essential), will find their own way to less seen content that suits them. Audiences and creators naturally find each other. Without making sacrifices!