Yes it is complicated. But there are a “finite” set of these data types (Nostr event kinds that interact with other events in ways that may be interesting for WoT) to calculate. 

There doesn’t need to be a standard of “which data types” should be used “in which manner” by clients. Some de facto standards may arise, while other algo inputs will only increase in complexity. Standards are not as important as adaptability. 

For the foreseeable future, developers of WoT recommendation engines will have to keep their ears to the ground to adapt their algo inputs accordingly. But this complication does not need to be developed all at once or overnight. 

Mind you, this is a new perspective for me. It’s much easier to just say “let’s make a standard”, to make development easier. But life IRL does not work this way. Life adapts. So we must learn to adapt as Nostr grows.

Today we do this. Tomorrow we do a bit more. Baby steps.