So far it's just an api call "find_recurrent_transfers" to see where your recurrent transfers are going.

I think this is needed also the other way around. To see which recurring transfers an account is going to receive. Suppose you are a content creator you want to see the 'incoming' recurring transfer, not the outgoing.
If you can include all the operation details (including the memo) will be great :)

Another point is how to fetch the transfers history. Are you going to use a new operation type? Or just a standard transfer? Ideally we would like to show a filterable list of all the recurring transfer received/sent by an account.

Everything else in my opinion should not be included in the core API 👍