Perhaps a mixture of common people you follow, total engagements, and a dynamic fee depending on the variables.
Discussion
Yeah, could do a whitelisting of people "in network" (friends and friends of friends) but some people are just super busy. Like... 'Bitcoin celebrities' (lol) might just opt to require 5,000 sats to see a message. And that's just the first message, after that, you could whitelist them rather than charge them EACH message.