Wouldn’t need more data than you currently download? (Assuming this is about sorting people you follow rather than suggestions for content you din’t follow).
Discussion
Oh I’m thinking for content discovery - you’d need to pull all events from multiple relays and probably the reaction counts - that would kill data I think. And battery
Suppose you could pull only new events and already have a local cache of seen stuff
Even just to “discover” content in your own existing feed (like stuff that happened whilst you were asleep but missed) would be cool. For content suggestion for people you don’t even follow would need more consideration.