Hi,
It would be great if not only we could read custom objects but if we could also write them and create new instances of them.
For instance, I have a form that enables a lead to search my products. With the API integration, I can push that information to Marketo and store in in lead fields. The big issue is : I can only keep the last search.
If I could use a "Product search" custom object, I would create a new instance of that object each time the visitor runs a search, similarly to tasks I can create.