You don't want to rare anywhere. 

Zaps, replies and shares are enough. They are universal things you can do on any content type. They are high signal and users do them anyway fir other reasons. 

LLM's and other types of computation can pick it up from there and show you whatever kind of synopsis stuffed to the aircofuck content type / user preference. 
If you prefer your synopsis to have some kind of ⭐⭐⭐⭐⭐ rating, go for it. But I'm not entering those.